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| subject: | Space Calendar - April 25, 2011 |
From Newsgroup: sci.space.news
Welcome to the Space Calendar!
This Space Calendar covers space-related activities and anniversaries
for the upcoming year. It is also available on the web at:
http://www.jpl.nasa.gov/calendar/
The web version of the Space Calendar includes over 2,100 links to related
home pages.
This calendar is compiled and maintained by Ron Baalke. Please send any
updates or corrections to ron{at}jpl.nasa.gov. Note that launch dates
are subject to change at any time. Also, note that anniversary dates are
listed in 5 year increments only.
The following people have contributed to this month's calendar:
o Dieter Kaemmer, Vicky Barlow, JR Stockton
=========================
SPACE CALENDAR
April 25, 2011
=========================
8 indicates changes from last month's calendar.
April 2011
* Apr ?? - Rasad 1/Safir-B1 Simorgh Launch (Iran)
* Apr 25 - Asteroid 2011 DV Near-Earth Flyby (0.100 AU)
Apr 26 - Asteroid 21 Lutetia Occults TYC 6873-00257-1 (8.6 Magnitude Star)
* Apr 26 - Asteroid 2011 GR59 Near-Earth Flyby (0.035 AU)
Apr 26 - Asteroid 9342 Carygrant Closest Approach To Earth (1.610 AU)
Apr 27 - Progress M-10M Soyuz U Launch (International Space Station 42P)
* Apr 27 - Asteroid 2011 GJ3 Near-Earth Flyby (0.020 AU)
Apr 27 - Asteroid 2008 UC202 Near-Earth Flyby (0.023 AU)
Apr 27 - Asteroid 2010 TU5 Near-Earth Flyby (0.090 AU)
Apr 27 - Asteroid 2410 Morrison Closest Approach To Earth (1.084 AU)
Apr 27 - Asteroid 11365 NASA Closest Approach To Earth (1.475 AU)
Apr 28 - Asteroid 2008 JV2 Near-Earth Flyby (0.059 AU)
Apr 28 - Asteroid 3350 Scobee Closest Approach To Earth (1.412 AU)
Apr 28 - Asteroid 770 Bali Closest Approach To Earth (1.509 AU)
Apr 28 - Asteroid 12820 Robinwilliams Closest Approach To Earth (2.047 AU)
* Apr 29 - STS-134 Launch, Space Shuttle Endeavour, International Space Station
Apr 29 - Cassini, Orbital Trim Maneuver #282 (OTM-282)
Apr 29 - Asteroid 1554 Yugoslavia Closest Approach To Earth (1.927 AU)
Apr 30 - Asteroid 38086 Beowolf Closest Approach To Earth (0.720)
Apr 30 - Asteroid 2362 Mark Twain Closest Approach To Earth (1.504 AU)
Apr 30 - Asteroid 2198 Ceplecha Closest Approach To Earth (2.092 AU)
Apr 30 - Kuiper Belt Object 90568 (2004 GV9) At Opposition (38.232 AU)
May 2011
May ?? - Shi Jian 9 CZ-2D2 Launch (China)
May ?? - Tian Lian 2 CZ-3C Launch
* May 01 - Asteroid 2011 DS9 Near-Earth Flyby (0.086 AU)
May 01 - Asteroid 2099 Opik Closest Approach To Earth (2.049 AU)
May 02 - Asteroid 2009 UK20 Near-Earth Flyby (0.022 AU)
May 02-08 - Astronomy Week
* May 03 - Comet C/2011 G1 (McNaught) Closest Approach To Earth (1.707 AU)
* May 04 - Meridian 4 Soyuz 2-1a-Fregat Launch
May 05 - Cassini, Orbital Trim Maneuver #283 (OTM-283)
May 05 - Eta Aquarids Meteor Shower Peak
May 05 - Asteroid 35352 Texas Closest Approach To Earth (1.218 AU)
May 05 - Asteroid 1278 Kenya Closest Approach To Earth (1.539 AU)
May 05 - Asteroid 2825 Crosby Closest Approach To Earth (1.625 AU)
May 05 - 50th Anniversary (1961), Freedom 7 Launch (Alan Shepard, 1st US
Man in Space)
May 06 - Space Day
* May 06 - SBIRS-Geo 1 Atlas 5 Launch
May 06 - Comet C/2010 X1 (Elenin) Closest Approach To Earth (1.827 AU)
May 06 - Asteroid 1484 Postrema Occults HIP 97401 (6.9 Magnitude Star)
May 06 - Asteroid 2010 KX7 Near-Earth Flyby (0.071 AU)
May 06 - Asteroid 149244 Kriegh Closest Approach To Earth (0.942 AU)
May 06 - Asteroid 4701 Milani Closest Approach To Earth (2.065 AU)
May 06 - Asteroid 2598 Merlin Closest Approach To Earth (2.366 AU)
May 07 - Astronomy Day
May 07 - Mercury At Its Greatest Western Elongation (27 Degrees)
May 07 - Comet P/2010 H5 (Scotti) Closest Approach To Earth (5.115 AU)
May 08 - Cassini, Titan Flyby
* May 08 - Asteroid 2011 FQ29 Near-Earth Flyby (0.054 AU)
May 08 - Asteroid 9937 Triceratops Closest Approach To Earth (1.804 AU)
May 09 - Comet C/2009 UG89 (Lemmon) Closest Approach To Earth (3.567 AU)
May 09 - Asteroid 2011 CG2 Near-Earth Flyby (0.048 AU)
May 09 - Asteroid 484 Pittsburghia Closest Approach To Earth (1.692 AU)
May 10 - Asteroid 27 Euterpe Occults HIP 115953 (6.3 Magnitude Star)
May 10 - Asteroid 886 Washingtonia Closest Approach To Earth (2.671 AU)
May 11 - Cassini, Orbital Trim Maneuver #284 (OTM-284)
* May 11 - Conjunction of Mercury, Venus, and Jupiter
May 11 - Asteroid 2006 DO62 Near-Earth Flyby (0.024 AU)
May 11 - Asteroid 6775 Giorgini Closest Approach To Earth (1.407 AU)
May 11 - Asteroid 6524 Baalke Closest Approach To Earth (1.673 AU)
May 11 - Theodore Von Karman's 130th Birthday (1881)
May 12 - Asteroid 2975 Spahr Closest Approach To Earth (1.062 AU)
May 12 - Asteroid 12574 LONEOS Closest Approach To Earth (1.863 AU)
May 12 - Asteroid 8300 Kronk Closest Approach To Earth (1.922 AU)
May 12 - Asteroid 7291 Hyakutake Closest Approach To Earth (2.764 AU)
May 13 - Asteroid 10 Hygiea At Opposition (9.1 Magnitude)
May 13 - Asteroid 2791 Paradise Closest Approach To Earth (1.616 AU)
* May 14 - TacSat 4 Minotaur 4 Launch
May 15 - Comet C/2010 L3 (Catalina) Closest Approach To Earth (9.293 AU)
May 15 - Asteroid 6000 United Nations Closest Approach To Earth (1.912 AU
May 16 - Comet C/2010 V1 (Ikeya-Murakami) Closest Approach To Earth (1.494 AU)
May 16 - Comet 231P/LINEAR-NEAT Perihelion (3.033 AU)
* May 17 - Asteroid 24452 (2000 QU167) Occults HIP 107596 (6.2 Magnitude Star)
* May 18 - Asteroid 1834 Palach Occults HIP 106786 (4.7 Magnitude Star)
May 18 - Asteroid 2006 JF42 Near-Earth Flyby (0.059 AU)
May 18 - Asteroid 141432 (2002 CQ11) Near-Earth Flyby (0.089 AU)
May 18 - Norman Lockyer's 175th Birthday (1836)
* May 19 - Insat 4-G/ST-2 Ariane 5 Launch
May 19 - Asteroid 1877 Marsden Closest Approach To Earth (2.516 AU)
* May 20 - Moon Occults New Horizons
May 20 - Telstar 14R (Estrela do Sul 2) Proton M-Briz M Launch
May 20 - Asteroid 1006 Lagrangea Closest Approach To Earth (2.970 AU)
May 21 - Asteroid 293 Brasilia Closest Approach To Earth (1.830 AU)
May 21 - Asteroid 51823 Rickhusband Closest Approach To Earth (2.785 AU)
May 22 - Comet P/2008 CL94 (Lemmon) Closest Approach To Earth (5.539 AU)
* May 23 - Kanopus-V N1/Belka 2/MKA-DKI/Baumanets-2 Soyuz FG-Fregat Launch
May 23 - Cassini, Orbital Trim Maneuver #285 (OTM-285)
May 23 - Asteroid 9000 Hal Closest Approach To Earth (1.003 AU)
May 24 - Asteroid 2009 UO1 Near-Earth Flyby (0.055 AU)
May 24 - Asteroid 1691 Oort Closest Approach To Earth (2.674 AU)
May 25 - Comet C/2010 D3 (WISE) Closest Approach To Earth (3.820 AU)
May 25 - Asteroid 767 Bondia Closest Approach To Earth (2.196 AU)
May 25 - 10th Anniversary (2001), Galileo, Callisto 30 Flyby
May 25 - 50th Anniversary (1961), John F. Kennedy's Moon Goal Speech
May 26 - Asteroid 10221 Kubrick Closest Approach To Earth (1.452 AU)
May 26 - Asteroid 2742 Gibson Closest Approach To Earth (2.081 AU)
May 26 - Asteroid 4179 Toutatis Closest Approach To Earth (2.907 AU)
May 28 - Asteroid 2001 Einstein Closest Approach To Earth (0.921 AU)
May 29 - 40th Anniversary (1971), Mars 3 Launch (USSR Mars Orbiter/Lander)
* May 30 - ORS-Sat 1 Minotaur 1 Launch
* May 30 - Asteroid 4569 Baerbel Occults HIP 109068 (4.9 Magnitude Star)
May 30 - Asteroid 1539 Borrelly Closest Approach To Earth (2.597 AU)
May 30 - 40th Anniversary (1971), Mariner 9 Launch (USA Mars Orbiter)
May 30 - 45th Anniversary (1966), Surveyor 1 Launch (USA Moon Lander)
May 31 - Asteroid 896 Sphinx Closest Approach To Earth (0.900 AU)
May 31 - Asteroid 3351 Smith Closest Approach To Earth (2.358 AU)
June 2011
Jun ?? - Cosmos-Garpun N-1 Proton M-Briz M Launch
Jun ?? - Huan Jing 1-C (HJ-1C) CZ-2C Launch
Jun ?? - Yaogan 12 CZ-4B Launch
Jun ?? - Beidou 2-M2 (Compass M-2)/Beidou 2-M3 (Compass M-3) CZ-3B Launch
* Jun ?? - Sich 2/NX/Nigeriasat2/Rasat/Edusat/AprizeSat 5 & 6/PQ-Gemini
1-4/BPA-2 Dnepr 1 Launch
* Jun ?? - Jugno PSLV Launch
Jun 01 - Partial Solar Eclipse, Visible in Asia, N. America, Iceland
Jun 01 - Asteroid 9885 Linux Closest Approach To Earth (1.496 AU)
Jun 01 - Asteroid 5145 Pholus Closest Approach To Earth (23.055 AU)
Jun 02 - Comet 164P/Christensen Perihelion (1.675 AU)
Jun 02 - Asteroid 2009 BD Near-Earth Flyby (0.002 AU)
Jun 02 - Asteroid 447 Valentine Closest Approach To Earth (2.067 AU)
Jun 03 - Asteroid 2010 XK Near-Earth Flyby (0.100 AU)
Jun 03 - 45th Anniversary (1966), Gemini 9 Launch (Thomas Stafford &
Eugene Cernan)
Jun 04 - Comet P/2010 A2 (LINEAR) Closest Approach To Earth (1.547 AU)
Jun 04 - Comet C/2009 F4 (McNaught) Closest Approach To Earth (5.179 AU)
Jun 04 - Asteroid 51829 Williemccool Closest Approach To Earth (1.168 AU)
Jun 05 - Asteroid 78577 JPL Closest Approach To Earth (2.211 AU)
Jun 06 - Asteroid 11881 Mirstation Closest Approach To Earth (1.597 AU)
* Jun 07 - Soyuz TMA-02M Soyuz FG Launch (International Space Station 28S)
Jun 07 - Comet 74P/Smirnova-Chernykh Closest Approach To Earth (3.125 AU)
Jun 07 - Comet C/2008 S3 (Boattini) Perihelion (8.018 AU)
Jun 07 - Asteroid 51824 Mikeanderson Closest Approach To Earth (1.914 AU)
Jun 07 - Asteroid 51826 Kalpanachawla Closest Approach To Earth (2.325 AU)
Jun 08 - Kuiper Belt Oject 28978 Ixion At Opposition (40.116 AU)
Jun 09 - Aquarius Delta 2 Launch
Jun 09 - Comet P/2010 H4 (Scotti) Closest Approach To Earth (4.021 AU)
* Jun 09 - Asteroid 3056 INAG Occults HIP 87853 (6.7 Magnitude Star)
* Jun 10 - SES-3/KazSat 2 Proton M-Briz M Launch
Jun 10 - Asteroid 37117 Narcissus At Opposition (9.482 AU)
* Jun 11- G-Sat 12 PSLV-C17 Launch (India)
Jun 11 - Comet 235P/LINEAR Closest Approach To Earth (2.629 AU)
Jun 12 - Asteroid 7672 Hawking Closest Approach To Earth (1.385 AU)
* Jun 13 - Kuiper Belt Object 50000 Quaoar At Opposition (42.119 AU)
Jun 14 - Comet 115P/Maury Closest Approach To Earth (1.311 AU)
Jun 14 - Asteroid 3130 Hillary Closest Approach To Earth (1.431 AU)
Jun 15 - Total Lunar Eclipse
Jun 15 - Asteroid 2004 LO2 Near-Earth Flyby (0.025 AU)
Jun 16 - Cassini, Orbital Trim Maneuver #286 (OTM-286)
Jun 16 - Comet 213P/Van Ness Perihelion (2.123 AU)
Jun 16 - Asteroid 8952 ODAS Closest Approach To Earth (1.415 AU)
Jun 16 - Asteroid 30441 Curly Closest Approach To Earth (1.856 AU)
Jun 17 - Asteroid 6223 Dahl Closest Approach To Earth (1.798 AU)
Jun 18 - Cassini, Distant Flyby of Helene & Telesto
Jun 18 - Asteroid 2451 Dollfus Closest Approach To Earth (1.368 AU)
Jun 18 - Allan Sandage's 85th Birthday (1926)
Jun 19 - Asteroid 1998 KM3 Near-Earth Flyby (0.093 AU)
Jun 19 - Asteroid 3162 Nostalgia Closest Approach To Earth (2.657 AU)
Jun 20 - Cassini, Titan Flyby
Jun 20 - Asteroid 8103 Fermi Closest Approach To Earth (1.852 AU)
Jun 20 - Asteroid 5223 McSween Closest Approach To Earth (2.233 AU)
Jun 20 - Asteroid 8373 Stephengould Closest Approach To Earth (2.968 AU)
Jun 21 - Summer Solstice, 17:16 UT
* Jun 21 - Progress M-11M/Chibis-M Soyuz U Launch (International Space Station 43P)
Jun 21 - Comet 62P/Tsuchinshan Closest Approach To Earth (2.352 AU)
Jun 21 - Asteroid 4 Vesta Occults TYC 6365-00736-1 (11.6 Magnitude Star)
Jun 21 - Asteroid 1602 Indiana Closest Approach To Earth (1.340 AU)
Jun 22 - Comet C/2010 R1 (LINEAR) Closest Approach To Earth (5.224 AU)
Jun 22 - 35th Anniversary (1976), Salyut 5 Launch (USSR Space Station)
Jun 23 - GPS 2F-2 Atlas 5 Launch
Jun 23 - Comet P/2010 H2 (Vales) Closest Approach To Earth (2.622 AU)
Jun 23 - Asteroid 2009 WW104 Near-Earth Flyby (0.039 AU)
Jun 23 - Asteroid 2010 NY65 Near-Earth Flyby (0.088 AU)
Jun 23 - Asteroid 1655 Comas Sola Closest Approach To Earth (2.392 AU)
Jun 24 - Cassini, Orbital Trim Maneuver #287 (OTM-287)
Jun 24 - Comet 130P/McNaught-Hughes Perihelion (2.098 AU)
Jun 24 - Asteroid 2 Pallas Occults TYC 1639-02448-1 (11.4 Magnitude Star)
Jun 24 - Asteroid 2531 Cambridge Closest Approach To Earth (2.105 AU)
Jun 25 - Comet 234P/LINEAR Closest Approach To Earth (2.785 AU)
Jun 25 - Asteroid 17023 Abbott Closest Approach To Earth (1.673 AU)
Jun 25 - Kuiper Belt Object 2002 MS4 At Opposition (46.139 AU)
Jun 26 - Dwarf Planet 134340 Pluto Closest Approach To Earth (31.062 AU)
Jun 26 - Asteroid 2531 Cambridge Occults HIP 89440 (6.0 Magnitude Star)
Jun 27 - Asteroid 9949 Brontosaurus Closest Approach To Earth (1.302 AU)
Jun 27 - 10th Anniversary (2001), Discovery of SAU 060 Meteorite (Mars Meteorite)
Jun 27 - 15th Anniversary (1996), Galileo, Ganymede 1 Flyby
Jun 28 - STS-135 Launch, Space Shuttle Atlantis, International Space Station
(Last Space Shuttle Launch)
Jun 28 - Dwarf Planet 134340 Pluto At Opposition (31.038 AU)
Jun 28 - Asteroid 43 Ariadne At Opposition (9.0 Magnitude)
Jun 28 - Asteroid 19367 Pink Floyd Closest Approach To Earth (1.611 AU)
Jun 28 - Asteroid 1604 Tombaugh Closest Approach To Earth (1.906 AU)
Jun 28 - 100th Anniversary (1911), Nakhla Meteorite Fall in Egypt (Mars
Meteorite, Hit Dog)
* Jun 29 - Astra 1N/B-Sat 3C (JC-Sat 110R) Ariane 5 Launch
* Jun 29 - Cosmos-Kobalt-M N7 Soyuz U Launch
Jun 29 - Asteroid 10799 Yucatan Closest Approach To Earth (1.376 AU)
Jun 29 - Asteroid 5036 Tuttle Closest Approach To Earth (2.320 AU)
Jun 29 - Asteroid 2929 Harris Closest Approach To Earth (2.183 AU)
Jun 30 - Moon Occults Venus
Jun 30 - Comet 62P/Tsuchinshan Perihelion (1.384 AU)
Jun 30 - Comet 176P/LINEAR Perihelion (2.576 AU)
Jun 30 - Asteroid 241 Germania Closest Approach To Earth (1.932 AU)
Jun 30 - 40th Anniversary (1971), Death of 3 Cosmonauts in Soyuz 11
July 2011
Jul ?? - Rosetta, Enters Hibernation
Jul ?? - Eutelsat-W3C CZ-3B Launch
Jul ?? - KompSat 5 (Arirang 5) Dnepr 1 Launch
Jul ?? - Fajr Safir-B1 Launch
Jul ?? - Hai Yang 2-A CZ-4B Launch (China)
Jul ?? - Chinasat 10 CZ-3B Launch (China)
* Jul ?? - Globalstar 2 (7-12) Soyuz 2-1a-Fregat Launch
* Jul ?? - Gonets M3 & M4/Cosmos-Rodnik N4/MiR Rokot KM Launch
Jul 01 - Partial Solar Eclipse, Visible in Indian Ocean
Jul 01 - Asteroid 4 Vesta Occults TYC 6365-01035-1 (10.4 Magnitude Star)
Jul 01 - Asteroid 2002 EM7 Near-Earth Flyby (0.028 AU)
Jul 01 - Asteroid 3267 Glo Closest Approach To Earth (1.829 AU)
Jul 01 - Smithsonian National Air & Space Museum's 35th Birthday (1976)
Jul 02 - Asteroid 2001 QP181 Near-Earth Flyby (0.090 AU)
Jul 02 - Asteroid 3353 Jarvis Closest Approach To Earth (0.764 AU)
Jul 03 - Asteroid 5841 Stone Closest Approach To Earth (1.085 AU)
Jul 04 - Earth At Aphelion (1.017 AU From Sun)
Jul 04 - Comet 123P/West-Hartley Perihelion (2.129 AU)
Jul 04 - Asteroid 21 Lutetia At Opposition (9.4 Magnitude)
Jul 05 - Asteroid 8575 Hawaii Closest Approach To Earth (2.391 AU)
Jul 05 - Asteroid 51827 Laurelclark Closest Approach To Earth (2.479 AU)
Jul 06 - Asteroid 128523 Johnmuir Closest Approach To Earth (1.344 AU)
Jul 06 - Asteroid 11246 Orvillewright Closest Approach To Earth (1.400 AU)
Jul 06 - Asteroid 11247 Wilburwright Closest Approach To Earth (1.937 AU)
Jul 06 - Asteroid 1125 China Closest Approach To Earth (2.788 AU)
Jul 07 - Asteroid 17062 Bardot Closest Approach To Earth (2.030 AU)
Jul 08 - Asteroid 16857 Goodall Closest Approach To Earth (1.789 AU)
Jul 09 - Cassini, Distant Titan Flyby
Jul 09 - Asteroid 951 Gaspra Closest Approach To Earth (1.213 AU)
Jul 09 - Asteroid 17024 Costello Closest Approach To Earth (1.259 AU)
Jul 09 - Asteroid 7818 Muirhead Closest Approach To Earth (1.888 AU)
* Jul 10 - Radio-Astron (Spektr R) Zenit 3F Launch
Jul 10 - Cassini, Distant Flyby of Helene, Janus, Pan & Prometheus
* Jul 10 - Comet P/2010 T2 (PANSTARRS) Perihelion (3.753 AU)
Jul 10 - Asteroid 3 Juno Occults UCAC2 33935848 (11.5 Magnitude Star)
Jul 10 - Asteroid 951 Gaspra Occults TYC 6274-00940-1 (10.3 Magnitude Star)
Jul 10 - Asteroid 4573 Piestany Occults HIP 100713 (6.8 Magnitude Star)
Jul 10 - Asteroid 6676 Monet Closest Approach To Earth (2.525 AU)
Jul 11 - Asteroid 2008 LV16 Near-Earth Flyby (0.080 AU)
Jul 13 - Asteroid 21 Lutetia Occults TYC 6863-00833-1 (12.1 Magnitude Star)
Jul 13 - Asteroid 1991 Darwin Closest Approach To Earth (0.811 AU)
Jul 13 - Asteroid 24101 Cassini Closest Approach To Earth (2.278 AU)
* Jul 14 - Asteroid 2343 Siding Spring Closest Approach To Earth (1.182 AU)
Jul 14 - Asteroid 9941 Iguanodo Closest Approach To Earth (1.560 AU)
Jul 15 - Dragon C-2/Orbcomm 2-1 & 2-2 Falcon 9 Launch
Jul 15 - Kuiper Belt Object 20000 Varuna At Opposition (44.587 AU)
Jul 16 - Dawn, Vesta Arrival
Jul 16 - Asteroid 4370 Dickens Closest Approach To Earth (1.062 AU)
Jul 16 - Asteroid 2000 Herschel Closest Approach To Earth (1.763 AU)
Jul 16 - Asteroid 5035 Swift Closest Approach To Earth (2.027 AU)
Jul 16 - Giuseppe Piazzi's 265th Birthday (1746)
Jul 17 - Comet 69P/Taylor Perihelion (2.271 AU)
Jul 17 - Asteroid 656 Beagle Closest Approach To Earth (2.434 AU)
Jul 18 - Comet C/2009 P2 (Boattini) Closest Approach To Earth (6.440 AU)
Jul 18 - Asteroid 4255 Spacewatch Closest Approach To Earth (2.435 AU)
Jul 18 - 45th Anniversary (1966), Gemini 10 Launch (John Young &
Michael Collins)
Jul 18 - John Glenn's 90th Birthday (1921)
Jul 19 - Comet C/2006 S3 (LONEOS) Closest Approach To Earth (4.554 AU)
Jul 19 - Asteroid 90 Antiope Occults HIP 112420 (6.7 Magnitude Star)
Jul 19 - Edward Pickering's 165th Birthday (1846)
Jul 20 - Mercury At Its Greatest Eastern Elongation (27 Degrees)
Jul 20 - Comet P/2010 J5 (McNaught) Closest Approach To Earth (3.027 AU)
Jul 20 - Asteroid 51825 Davidbrown Closest Approach To Earth (2.076 AU)
Jul 20 - 35th Anniversary (1976), Viking 1, Mars Landing
Jul 21 - Asteroid 2187 La Silla Closest Approach To Earth (1.350 AU)
Jul 21 - 50th Anniversary (1961), Mercury 4 Launch (Gus Grissom, Liberty Bell 7)
Jul 22 - Comet 183P/Korlevic-Juric Closest Approach To Earth (3.906 AU)
Jul 22 - Asteroid 2007 RQ17 Near-Earth Flyby (0.034 AU)
Jul 22 - Asteroid 2008 TC Near-Earth Flyby (0.061 AU)
Jul 22 - Asteroid 5450 Sokrates Closest Approach To Earth (2.133 AU)
Jul 23 - Asteroid 2007 DD Near-Earth Flyby (0.024 AU)
Jul 24 - Asteroid 2985 Shakespeare Closest Approach To Earth (1.713 AU)
Jul 24 - Asteroid 6227 Alanrubin Closet Approach To Earth (1.731 AU)
Jul 25 - Asteroid 532 Herculina At Opposition (9.8 Magnitude)
Jul 25 - Asteroid 2011 AA37 Near-Earth Flyby (0.078 AU)
Jul 25 - Asteroid 4149 Harrison Closest Approach To Earth (1.531 AU)
Jul 25 - Asteroid 1288 Santa Closest Approach To Earth (1.759 AU)
Jul 26 - Asteroid 9880 Stegosaurus Closest Approach To Earth (1.440 AU)
Jul 26 - 40th Anniversary (1971), Apollo 15 Launch (4th Manned Moon Landing)
Jul 27 - Moon Occults Mars
Jul 27 - Asteroid 9 Metis At Opposition (9.6 Magnitude)
Jul 27 - George Airy's 210th Birthday (1801)
* Jul 28 - Cosmos-Glonass M36 Soyuz 2-1B-Fregat Launch
Jul 28 - Asteroid 380 Fiducia Occults HIP 20455 (3.8 Magnitude Star)
Jul 28 - Asteroid 1865 Cerberus Closest Approach To Earth (0.504 AU)
Jul 28 - Asteroid 508 Princetonia Closest Approach To Earth (2.176 AU)
Jul 29 - South Delta-Aquarids Meteor Shower Peak
Jul 29 - Asteroid 3000 Leonardo Closest Approach To Earth (1.158 AU)
Jul 29 - Asteroid 43844 Rowling Closest Approach To Earth (1.457 AU)
Jul 30 - Asteroid 2004 Lexell Closest Approach To Earth (1.230 AU)
Jul 30 - 10th Anniversary (2001), MAP, Moon Flyby
August 2011
Aug ?? - Tian Gong 1 CZ-2F/T1 Launch (1st Chinese Space Station)
Aug ?? - Katysat 1/KiwiSat/Atmocube/Cubesat-RAFT/Funsat/UCISAT Dnepr 1 Launch
Aug ?? - IGS-5 H-2A Launch (Japan)
Aug ?? - ViaSat 1 Proton M-Briz M Launch
Aug ?? - Megha-Tropiques/AIS-Sat 1 PSLV Launch
Aug ?? - Intelsat 18 Zenit 3SLB Launch
* Aug ?? - Cosmos-Glonass M33/M34/M35 Proton M-Briz M Launch
Aug 01 - Cassini, Distant Flyby of Helene, Titan, Telesto, Methone & Rhea
Aug 01 - Alpha Capricornids Meteor Shower Peak
Aug 01 - Comet 48P/Johnson Closest Approach To Earth (1.325 AU)
Aug 01 - Asteroid 2 Pallas At Opposition (9.5 Magnitude)
Aug 01 - Asteroid 1103 Sequoia Closest Approach To Earth (0.815 AU)
Aug 01 - Asteroid 2063 Bacchus Closest Approach To Earth (0.902 AU)
Aug 01 - Asteroid 4 Vesta Closest Approach To Earth (1.227 AU)
Aug 01 - Asteroid 17059 Elvis Closest Approach To Earth (1.342 AU)
Aug 01 - Asteroid 310 Margarita Closest Approach To Earth (1.874 AU)
Aug 02 - Asteroid 4433 Goldstone Closest Approach To Earth (1.118 AU)
Aug 03 - Asteroid 10051 Albee Closest Approach To Earth (1.315 AU)
Aug 04 - Asteroid 88292 Bora-Bora Closest Approach To Earth (0.673 AU)
Aug 04 - Asteroid 2991 Bilbo Closest Approach To Earth (0.838 AU)
Aug 04 - Asteroid 1704 Wachmann Closest Approach To Earth (1.336 AU)
Aug 05 - Juno Atlas 5 Launch
Aug 05 - Asteroid 4 Vesta At Opposition (5.6 Magnitude)
Aug 05 - Asteroid 6758 Jesseowens Closest Approach To Earth (1.570 AU)
Aug 05 - Asteroid 3808 Tempel Closest Approach To Earth (1.583 AU)
Aug 06 - Southern Iota Aquarids Meteor Shower Peak
Aug 06 - Asteroid 4769 Castalia Closest Approach To Earth (0.463 AU)
Aug 06 - Asteroid 2597 Arthur Closest Approach To Earth (1.888 AU)
Aug 06 - 10th Anniversary (2001), Galileo, Io 31 Flyby
Aug 06 - 50th Anniversary (1961), Vostok 2 Launch (Gherman Titov - 2nd
Man in Space)
Aug 06 - 830th Anniversary (1181), Discovery of Supernova Cassiopeia
Aug 07 - Dawn, Vesta Science Phase Begins
Aug 07 - Asteroid 1566 Icarus Closest Approach To Earth (0.909 AU)
Aug 07 - Asteroid 9770 Discovery Closest Approach To Earth (1.370 AU)
Aug 07 - 15th Anniversary (1996), Announcement of Possible Microfossils
Found in ALH84001 Martian Meteorite
Aug 07 - 35th Anniversary (1976), Viking 2, Mars Orbit Insertion
Aug 08 - Asteroid 1718 Namibia Closest Approach To Earth (0.755 AU)
Aug 08 - 10th Anniversary (2001), Genesis Launch (Solar Particle Sample Return)
Aug 09 - Asteroid 5891 Gehrig Closest Approach To Earth (1.432 AU)
Aug 09 - Asteroid 4628 Laplace Closest Approach To Earth (1.919 AU)
Aug 09 - 35th Anniversary (1976), Luna 24 Launch (USSR Moon Sample Return)
Aug 10 - 45th Anniversary (1966), Lunar Orbiter 1 Launch
* Aug 11 - Arabsat 5-C/SES-2 Ariane 5 Launch
Aug 12 - Perseids Meteor Shower Peak
Aug 12 - Asteroid 6030 Zolensky Closest Approach To Earth (2.045 AU)
Aug 12 - Asteroid 3259 Brownlee Closest Approach To Earth (2.401 AU)
Aug 13 - Asteroid 5000 IAU Closest Approach To Earth (1.171 AU)
Aug 13 - Asteroid 69230 Hermes Closest Approach To Earth (1.629 AU)
Aug 13 - Asteroid 10204 Turing Closest Approach To Earth (1.889 AU)
Aug 13 - 415th Anniversary (1596), Discovery of Mira, Omicron Ceti by
David Fabricius
Aug 14 - PakSat-1R CZ-3B Launch
Aug 14 - Asteroid 2022 West Closest Approach To Earth (1.620 AU)
Aug 15 - Comet 45P/Honda-Mrkos-Pajdusakova Near-Earth Flyby (0.060 AU)
Aug 15 - Asteroid 349 Dembowska At Opposition (9.7 Magnitude)
Aug 15 - Asteroid 1762 Russell Closest Approach TO Earth (1.793 AU)
Aug 16 - Comet C/2009 Y1 (Catalina) Closest Approach To Earth (2.327 AU)
Aug 16 - Kuiper Belt Object 2004 PG115 Closest Approach To Earth (36.044 AU)
Aug 16 - 50th Anniversary (1961), Explorer 12 Launch
AUg 17 - 45th Anniversary (1966), Pioneer 7 Launch
Aug 18 - Asteroid 783 Nora Occults HIP 73587 (6.6 Magnitude Star)
Aug 18 - Asteroid 1154 Astronomia Closest Approach To Earth (2.208 AU)
* Aug 19 - Asteroid 2011 BL45 Near-Earth FLyby (0.099 AU)
Aug 19 - Asteroid 2688 Halley Closest Approach To Earth (1.836 AU)
Aug 19 - Orville Wright's 140th Birthday (1871)
Aug 19 - John Flamsteed's 365th Birthday (1646)
Aug 21 - Comet 97P/Metcalf-Brewington Perihelion (2.597 AU)
Aug 21 - Asteroid 6336 Dodo Closest Approach To Earth (1.341 AU)
Aug 21 - Asteroid 1225 Ariane Closest Approach To Earth (1.359 AU)
Aug 22 - Cassini, Orbital Trim Maneuver #288 (OTM-288)
Aug 22 - Neptune At Opposition
Aug 22 - Comet P/2004 HC18 (LINEAR) Closest Approach To Earth (1.771 AU)
Aug 22 - Comet 95P/Chiron Closest Approach To Earth (15.859)
Aug 22 - Asteroid 17744 Jodiefoster Closest Approach To Earth (0.657 AU)
Aug 22 - Asteroid 3355 Onizuka Closest Approach To Earth (1.225 AU)
Aug 22 - Asteroid 671 Carnegia Closest Approach To Earth (2.202 AU)
Aug 23 - Cassini, Distant Flyby of Epimetheus & Atlas
Aug 23 - Comet C/2009 P1 (Garradd) Closest Approach To Earth (1.391 AU)
Aug 23 - Comet 228P/LINEAR Perihelion (3.430 AU)
Aug 23 - Comet 158P/Kowal-LINEAR Closest Approach To Earth (3.598 AU)
Aug 24 - Cassini, Distant Flyby of Titan
Aug 24 - Comet 9P/Tempel Closest Approach To Earth (1.584 AU)
Aug 24 - Asteroid 1578 Kirkwood Closest Approach To Earth (3.059 AU)
Aug 24 - 5th Anniversary (2006), Pluto Demoted As A Planet
Aug 24 - 45th Anniversary (1966), Luna 11 Launch (USSR Moon Orbiter)
Aug 25 - Cassini, Distant Flyby of Hyperion
Aug 25 - Northern Iota Aquarids Meteor Shower Peak
Aug 25 - Comet 130P/McNaught-Hughes Closest Approach To Earth (1.160 AU)
Aug 25 - Asteroid 2005 QQ87 Near-Earth Flyby (0.084 AU)
Aug 25 - Kuiper Belt Object 2007 OR10 At Opposition (85.390 AU)
Aug 26 - Asteroid 2007 UT3 Near-Earth Flyby (0.090 AU)
Aug 26 - Asteroid 793 Arizona Closest Approach To Earth (1.506 AU)
Aug 26 - 30th Anniversary (1981), Voyager 2, Saturn Flyby
Aug 27 - Asteroid 1340 Yvette Occults HIP 107095 (5.2 Magnitude Star)
Aug 27 - Asteroid 5731 Zeus Closest Approach To Earth (2.624 AU)
Aug 28 - Asteroid 2002 JR100 Near-Earth Flyby (0.051 AU)
Aug 28 - Asteroid 2010 JW34 Near-Earth Flyby (0.078 AU)
Aug 28 - Asteroid 4238 Audrey Closest Approach To Earth (1.552 AU)
Aug 29 - Asteroid 30440 Larry Closest Approach To Earth (1.954 AU)
Aug 30 - Progress M-012M Soyuz U Launch (International Space Station 44P)
Aug 30 - 20th Anniversary (1991), Yohkoh Launch
Aug 31 - Comet 213P/Van Ness Closest Approach To Earth (1.201 AU)
Aug 31 - Asteroid 2271 Kiso Occults HIP 69427 (4.2 Magnitude Star)
September 2011
Sep ?? - AsiaSat 7 Proton M-Briz M Launch
Sep ?? - Mesbah Safir 2 Launch (Iran)
Sep ?? - Laser Relativity Satellite (LARES)/Cubesats/PW-Sat 1 Vega Launch
(Inaugural Vega Launch)
Sep ?? - SES-4 Proton M-Briz M Launch
Sep 01 - Cassini, Orbital Trim Maneuver #288A (OTM-288A)
Sep 01 - Asteroid 6471 Collins Closest Approach To Earth (1.698 AU)
Sep 01 - Asteroid 73491 Robmatson Closest Approach To Earth (1.970 AU)
Sep 01 - Asteroid 2006 SQ372 Closest Approach To Earth (24.005 AU)
Sep 02 - Comet C/2010 G2 (Hill) Perihelion (1.981 AU)
Sep 02 - Asteroid 192 Nausikaa At Opposition (8.3 Magnitude)
Sep 03 - Mercury At Its Greatest Western Elongation (18 Degrees)
Sep 03 - Asteroid 1 Ceres Occults TYC 5839-00556-1 (11.2 Magnitude Star)
Sep 03 - 5th Anniversary (2006), SMART-1, Moon Impact
Sep 03 - 35th Anniversary (1976), Viking 2, Mars Landing
Sep 04 - Asteroid 1430 Somalia Closest Approach To Earth (1.087 AU)
Sep 06 - Asteroid 2008 EK1 Near-Earth Flyby (0.084 AU)
Sep 06 - 15th Anniversary (1996), Galileo, Ganymede 2 Encounter
Sep 08 - GRAIL Delta 2 Heavy Launch
Sep 08 - Cassini, Orbital Trim Maneuver #289 (OTM-289)
Sep 08 - 45th Anniversary (1966), 1st Star Trek Episode on TV
Sep 10 - Comet C/2010 X1 (Elenin) Perihelion (0.482 AU)
Sep 12 - Cassini, Titan Flyby
Sep 12 - Asteroid 12818 Tomhanks Closest Approach To Earth (1.622 AU)
Sep 12 - Asteroid 1268 Libya Closest Approach To Earth (3.196 AU)
Sep 12 - 45th Anniversary (1966), Gemini 11 Launch (Charles Conrad and
Richard Gordon)
Sep 13 - Cassini, Distant Flyby of Pandora, Enceladus & Janus
Sep 13 - Asteroid 2967 Vladisvyat Occults HIP 118081 (6.5 Magnitude Star)
Sep 13 - Asteroid 2062 Aten Closest Approach To Earth (0.355 AU)
Sep 13 - Asteroid 10792 Ecuador Closest Approach To Earth (1.803 AU)
Sep 14 - Cassini, Distant Flyby of Methone, Pallene & Telesto
Sep 14 - Asteroid 3949 Mach Closest Approach To Earth (1.274 AU)
Sep 15 - Luch 5A/Amos 5 Proton M-Briz M Launch
Sep 15 - Cassini, Orbital Trim Maneuver #290 (OTM-290)
Sep 15 - 20th Anniversary (1991), UARS Launch from Space Shuttle Discovery
Sep 16 - Cassini, Distant Flyby of Hyperion
Sep 16 - Asteroid 1991 TF3 Near-Earth Flyby (0.086 AU)
Sep 17 - Asteroid 1 Ceres At Opposition (7.6 Magnitude)
Sep 17 - Asteroid 1 Ceres Closest Approach To Earth (1.989 AU)
Sep 18 - Asteroid 2 Pallas Occults TYC 1056-02803-1 (11.3 Magnitude Star)
Sep 18 - Asteroid 2007 VB138 Near-Earth Flyby (0.081 AU)
Sep 18 - Asteroid 132524 APL Closest Approach To Earth (1.055 AU)
Sep 19 - Cassini, Orbital Trim Maneuver #291 (OTM-291)
Sep 19 - Asteroid 472 Roma Closest Approach To Earth (1.465 AU)
Sep 19 - Asteroid 25399 Vonnegut Closest Approach To Earth (1.810 AU)
Sep 19 - Asteroid 232 Russia Closest Approach To Earth (1.944 AU)
* Sep 20 - Comet C/2011 G1 (McNaught) Perihelion (2.027 AU)
Sep 21 - Asteroid 194 Prokne Occults HIP 90083 (6.4 Magnitude Star)
Sep 21 - Asteroid 2009 UR5 Near-Earth Flyby (0.076 AU)
Sep 21 - Asteroid 1501 Baade Closest Approach To Earth (1.014 AU)
Sep 21 - Asteroid 1777 Gehrels Closest Approach To Earth (1.639 AU)
Sep 22 - Asteroid 21 Lutetia Occults UCAC2 21409431 (11.5 Magnitude Star)
Sep 22 - 10th Anniversary (2001), Deep Space 1, Comet Borrelly Flyby
Sep 22 - Asteroid 5738 Billpickering Closest Approach To Earth (2.413 AU)
Sep 23 - Autumnal Equinox (09:04 UT)
Sep 23 - Asteroid 2007 TD Near-Earth Flyby (0.010 AU)
Sep 23 - Asteroid 9133 d'Arrest Closest Approach To Earth (1.184 AU)
Sep 23 - 165th Anniversary (1846), Johann Galle's Discovery of Neptune
Sep 23 - Johann Franz Encke's 220th Birthday (1791)
Sep 24 - Asteroid 13801 Kohlhase Closest Approach To Earth (1.986 AU)
Sep 25 - Uranus at Opposition
Sep 25 - Asteroid 9769 Nautilus Closest Approach To Earth (1.495 AU)
Sep 26 - Asteroid 5029 Ireland Closest Approach To Earth (1.683 AU)
Sep 27 - Asteroid 8353 Megryan Closest Approach To Earth (2.055 AU)
Sep 28 - Cassini, Distant Flyby of Titan
Sep 28 - Cassini, Orbital Trim Maneuver #292 (OTM-292)
* Sep 28 - Comet 45P/Honda-Mrkos-Pajdusakova Perihelion (0.530 AU)
Sep 28 - Asteroid 2009 SH2 Near-Earth Flyby (0.077 AU)
Sep 28 - 40th Anniversary (1971), Luna 19 Launch (USSR Moon Orbiter)
Sep 28 - 60th Anniversary (1951), Seth Nicholson's Discovery of Jupiter
Moon Ananke
Sep 29 - Comet 48P/Johnson Perihelion (2.301 AU)
Sep 29 - Asteroid 3356 Resnik Closest Approach To Earth (1.234 AU)
Sep 30 - Soyuz TMA-22 Soyuz FG Launch (International Space Station 28S)
Sep 30 - Cassini, Distant Flyby of Titan
Sep 30 - Comet 36P/Whipple Closest Approach To Earth (2.119 AU)
Sep 30 - Comet C/2008 S3 (Boattini) Closest Approach To Earth (7.075 AU)
Sep 30 - Asteroid 6433 Enya Closest Approach To Earth (0.983 AU)
Sep 30 - Asteroid 991 McDonalda Closest Approach To Earth (1.820 AU)
October 2011
Oct ?? - Shenzhou 8 CZ-2F/H Launch (China)
Oct ?? - SES-2 Ariane 5 Launch
Oct ?? - Mikhailo Lomonosov Dnepr 1 Launch
Oct ?? - Telcom 3/Express MD-2 Proton M-Briz M Launch
Oct ?? - SkyTerra 2 Proton-Briz M Launch
Oct ?? - NigComSat 1-R CZ-3B/E Launch
Oct ?? - Beidou 2-M4 (Compass M-4)/Beidou 2-M5 (Compass M-5) CZ-3B Launch
Oct ?? - Express AM-4 Proton M-Briz M Launch
* Oct ?? - Galileo IOV 1 & 2 Soyuz 2-1b-Fregat Launch
* Oct ?? - Globalstar 2 (13-18) Soyuz 2-1a-Fregat Launch
* Oct ?? - Taurus 2 Test Launch
Oct 01 - Cassini, Enceladus Flyby
Oct 01 - Cassini, Distant Flyby of Epimetheus & Calypso
Oct 01 - Asteroid 2009 DO111 Near-Earth Flyby (0.079 AU)
Oct 01 - Asteroid 2009 HV2 Near-Earth Flyby (0.084 AU)
Oct 01 - 20th Anniversary (1991), Release of US Planetary Exploration Stamps
Oct 02 - Comet 131P/Mueller Closest Approach To Earth (1.503 AU)
Oct 02 - Asteroid 3259 Brownlee Occults TYC 0517-00322-1 (9.6 Magnitude Star)
Oct 02 - Asteroid 1913 Sekanina Closest Approach To Earth (1.673 AU)
Oct 02 - Asteroid 2956 Yeomans Closest Approach To Earth (1.938 AU)
Oct 02 - Asteroid 4763 Ride Closest Approach To Earth (1.938 AU)
Oct 04 - Cassini, Orbital Trim Maneuver #294 (OTM-294)
Oct 04 - Comet P/1996 R2 (Lagerkvist) Closest Approach To Earth (1.613 AU)
Oct 04 - Asteroid 27 Euterpe At Opposition (9.3 Magnitude)
Oct 04 - Asteroid 3656 Hemingway Closest Approach To Earth (1.324 AU)
Oct 04 - Asteroid 2228 Soyuz-Apollo Closest Approach To Earth (1.771 AU)
Oct 04-10 - World Space Week
Oct 05 - Comet 78P/Gehrels Closest Approach To Earth (1.185 AU)
Oct 05 - Asteroid 24102 Jacquecassini Closest Approach To Earth (1.227 AU)
Oct 06 - Comet 115P/Maury Perihelion (2.035 AU)
Oct 06 - Asteroid 1495 Helsinki Closest Approach To Earth (1.633 AU)
Oct 07 - Asteroid 2005 TQ45 Near-Earth Flyby (0.092 AU)
Oct 07 - Asteroid 3297 Hong Kong Closest Approach To Earth (1.649 AU)
Oct 08 - Dragon C-3 Falcon 9 Launch
Oct 08 - Comet 215P/NEAT Closest Approach To Earth (2.783 AU)
Oct 08 - Comet C/2009 S3 (Lemmon) Closest Approach To Earth (5.840 AU)
Oct 09 - Cassini, Orbital Trim Maneuver #295 (OTM-295)
Oct 09 - Draconids Meteor Shower Peak
Oct 09 - Asteroid 3564 Talthybius Occults HIP 28380 (2.6 Magnitude Star)
Oct 09 - Asteroid 1998 SD9 Near-Earth Flyby (0.072 AU)
Oct 09 - Asteroid 30785 Greeley Closest Approach To Earth (0.737 AU)
Oct 09 - Asteroid 1224 Fantasia Closest Approach To Earth (0.872 AU)
Oct 10 - Asteroid 7032 Hitchcock Closest Approach To Earth (1.231 AU)
Oct 10 - Asteroid 4457 van Gogh Closest Approach To Earth (1.953 AU)
Oct 10 - 165th Anniversary (1846), William Lassell's Discovery of Neptune
Moon Triton
Oct 11 - Asteroid 2554 Skiff Closest Approach To Earth (1.357 AU)
Oct 12 - Asteroid 547 Praxedis Occults HIP 44738 (6.2 Magnitude Star)
Oct 12 - Asteroid 567 Eleutheria Occults HIP 97210 (6.8 Magnitude Star)
Oct 12 - Asteroid 2010 GM65 Near-Earth Flyby (0.038 AU)
Oct 12 - Asteroid 4099 Wiggins Closest Approach To Earth (1.505 AU)
Oct 12 - Astronomical Society of France's 120th Birthday (1891)
Oct 13 - Asteroid 5682 Beresford Closest Approach To Earth (0.692 AU)
Oct 13 - Asteroid 18932 Robinhood Closest Approach To Earth (1.108 AU)
Oct 13 - Asteroid 1981 Midas Closest Approach To Earth (1.601 AU)
Oct 14 - Asteroid 904 Rockefellia Closest Approach To Earth (1.889 AU)
Oct 15 - Asteroid 1990 UA Near-Earth Flyby (0.084 AU)
Oct 15 - Asteroid 2919 Dali Closest Approach To Earth (2.183 AU)
Oct 15 - Kuiper Belt Object 55636 (2002 TX300) Closest Approach To Earth
(40.850 AU)
Oct 15 - Dwarf Planet 136199 Eris At Opposition (95.606 AU)
Oct 16 - Comet 73P-C/Schwassmann-Wachmann C Perihelion (0.943 AU)
Oct 17 - Comet C/2010 X1 (Elenin) Closest Approach To Earth (0.233 AU)
Oct 17 - Comet P/1996 R2 (Lagerkvist) Perihelion (2.612 AU)
Oct 17 - Asteroid 2009 TM8 Near-Earth Flyby (0.003 AU)
Oct 17 - Kuiper Belt Object 15760 (1992 QB1) At Opposition (40.133 AU)
Oct 18 - Asteroid 2009 UC Near-Earth Flyby (0.055 AU)
Oct 18 - Asteroid 2266 Tchaikovsky Closest Approach To Earth (1.998 AU)
Oct 19 - Cassini, Enceladus Flyby
Oct 19 - Cassini, Distant Flyby of Telesto
Oct 19 - Comet 49P/Arend-Rigaux Perihelion (1.424 AU)
Oct 19 - Asteroid 469 Argentina Closest Approach To Earth (2.660 AU)
Oct 20 - Cassini, Orbital Trim Maneuver #296 (OTM-296)
Oct 20 - Asteroid 2118 Flagstaff Closest Approach To Earth (1.138 AU)
Oct 21 - Orionids Meteor Shower Peak
Oct 22 - 45th Anniversary (1966), Luna 12 Launch (USSR Moon Orbiter)
Oct 23 - Asteroid 433 Eros Occults TYC 3390-00294-1 (9.9 Magnitude Star)
Oct 23 - Asteroid 4337 Arecibo Closest Approach To Earth (2.564 AU)
Oct 24 - Comet 198P/ODAS Closest Approach To Earth (1.217 AU)
Oct 24 - Comet 111P/Helin-Roman-Crockett Closest Approach To Earth (2.951 AU)
Oct 24 - Comet C/2009 W2 (Boattini) Closest Approach To Earth (6.765 AU)
Oct 24 - Asteroid 230 Athamantis At Opposition (9.9 Magnitude)
Oct 24 - Asteroid 2003 FH Near-Earth Flyby (0.065 AU)
Oct 24 - 5th Anniversary (2006), MESSENGER, 1st Venus Flyby
Oct 24 - 160th Anniversary (1851), William Lassell's Discovery of Uranus Moons
Umbriel and Ariel
Oct 25 - NPP/Lightsail 1 Delta 2 Launch
Oct 25 - 5th Anniversary (2006), STEREO Launch
Oct 25 - 340th Anniversary (1671), Giovanni Cassini's Discovery of Saturn
Moon Iapetus
Oct 26 - Progress M-13M Soyuz U Launch (International Space Station 45P)
Oct 26 - Asteroid 4 Vesta Occults TYC 6923-01354-1 (11.7 Magnitude Star)
Oct 26 - Asteroid 1993 VD Near-Earth Flyby (0.090 AU)
Oct 26 - Asteroid 2006 SP19 Near-Earth Flyby (0.092 AU)
Oct 26 - Asteroid 2866 Hardy Closest Approach To Earth (1.522 AU)
Oct 26 - Asteroid 2002 Euler Closest Approach To Earth (1.585 AU)
Oct 27 - Asteroid 2005 CJ Near-Earth Flyby (0.083 AU)
Oct 27 - 50th Anniversary (1961), 1st Test Flight of Saturn 1 Launch Vehicle
Oct 28 - Cassini, Orbital Trim Maneuver #297 (OTM-297)
Oct 28 - Moon Occults Mercury
Oct 28 - Asteroid 4150 Starr Closest Approach To Earth (1.126 AU)
Oct 28 - 40th Anniversary (1971), Great Britian's First Space Launch (Prospero)
Oct 29 - Jupiter at Opposition
Oct 29 - Kuiper Belt Object 55637 (2002 UX25) Closest Approach To Earth (40.454 AU)
Oct 29 - 20th Anniversary (1991), Galileo, Asteroid Gaspra Flyby
Oct 30 - Asteroid 2023 Asaph Closest Approach To Earth (1.319 AU)
Oct 30 - Asteroid 1941 Wild Closest Approach To Earth (1.990 AU)
Oct 30 - 30th Anniversary (1981), Venera 13 Launch (USSR Venus
Lander/Flyby Mission)
Oct 31 - Asteroid 2010 VU98 Near-Earth Flyby (0.046 AU)
* Oct 31 - Kuiper Belt Object 84522 (2002 TC302) At Oppostion (45.071 AU)
Oct 31 - 75th Anniversary (1936), 1st Successful Rocket Engine Test in Pasadena,
California (JPL's Beginnings)
November 2011
Nov ?? - QuezSat 1 Proton M-Briz M Launch
Nov ?? - Microscope Ariane 5 Launch
Nov ?? - GCOM-W1/Kompsat 3/SDS-4/Houryuu-2 H-2A Launch
Nov ?? - Unamsat 3 Dnepr 1 Launch
Nov ?? - Bluesat Dnepr 1 Launch
Nov ?? - Intelsat 23 Proton M-Briz M Launch
Nov ?? - Pleiades 1/Elisa 1-4/SSOT Soyuz STA-Fregat Launch
Nov ?? - Geo-IK 2 N2 Rokot KM Launch
Nov ?? - RISAT 1 PSLV-C18 Launch
Nov ?? - Zafar 1 Safir-B1 Launch (Iran)
* Nov ?? - Hausat 2 Dnepr 1 Launch
* Nov ?? - SRMSat PSLV Launch
Nov 02 - Cassini, Orbital Trim Maneuver #298 (OTM-298)
Nov 02 - Asteroid 5215 Tsurui Occults HIP 17457 (5.2 Magnitude Star)
Nov 03 - Taurids Meteor Shower Peak
Nov 03 - Asteroid 5203 Pavarotti Closest Approach To Earth (1.256 AU)
Nov 03 - Asteroid 797 Montana Closest Approach To Earth (1.692 AU)
Nov 03 - Asteroid 4221 Picasso Closest Approach To Earth (1.976 AU)
Nov 04 - Dragon CRS-2 Falcon 9 Launch (International Space Station)
Nov 04 - Comet 73P-C/Schwassmann-Wachmann C Closest Approach To Earth (1.595 AU)
Nov 04 - Asteroid 8249 Gershwin Closest Approach To Earth (1.743 AU)
Nov 04 - Asteroid 716 Berkeley Closest Approach To Earth (2.056 AU)
Nov 04 - 15th Anniversary (1996), Galileo, Callisto 3 Flyby
Nov 04 - 30th Anniversary (1981), Venera 14 Launch (USSR Venus Lander/Flyby)
Nov 05 - Asteroid 1034 Mozartia Closest Approach To Earth (1.146 AU)
Nov 05 - Asteroid 19578 Kirkdouglas Closest Approach To Earth (1.729 AU)
Nov 05 - Fred Whipple's 105th Birthday (1906)
Nov 06 - Daylight Saving - Set Clock Back 1 Hour (United States)
Nov 06 - Cassini, Enceladus Flyby
Nov 06 - Cassini, Distant Flyby of Methone, Pandora & Calypso
Nov 06 - Comet 242P/Spahr Closest Approach To Earth (3.149 AU)
Nov 06 - Asteroid 29 Amphitrite At Opposition (8.7 Magnitude)
Nov 06 - Asteroid 4017 Disneya Closest Approach To Earth (1.450 AU)
Nov 06 - Asteroid 117329 Spencer Closest Approach To Earth (1.639 AU)
Nov 07 - Comet C/2009 K3 (Beshore) Closest Approach To Earth (3.861 AU)
Nov 07 - Asteroid 3753 Cruithne Closest Approach To Earth (0.435 AU)
Nov 07 - Asteroid 17078 Sellers Closest Approach To Earth (1.740 AU)
Nov 07 - Asteroid 15000 CCD Closest Approach To Earth (2.070 AU)
Nov 07 - Asteroid 9969 Braille Closest Approach To Earth (2.322 AU)
Nov 07 - 15th Anniversary (1996), Mars Global Surveyor Launch
Nov 07 - 45th Anniversary (1966), Lunar Orbiter 2 Launch
Nov 08 - Phobos-Grunt/Ying Huo 1 Zenit 3F Launch (Russian Phobos Sample
Return Mission & China Mars Orbiter)
Nov 08 - Cassini, Orbital Trim Maneuver #299 (OTM-299)
Nov 08 - Asteroid 2005 YU55 Near-Earth Flyby (0.002 AU)
Nov 08 - Asteroid 2005 XB1 Near-Earth Flyby (0.074 AU)
Nov 08 - Asteroid 1282 Utopia Closest Approach To Earth (1.805 AU)
Nov 08 - Edmund Halley's 355th Birthday (1656)
Nov 09 - Asteroid 11055 Honduras Closest Approach To Earth (1.747 AU)
Nov 09 - Asteroid 1031 Arctica Closest Approach To Earth (2.128 AU)
Nov 10 - Asteroid 21 Lutetia Occults TYC 6905-00037-1 (12.4 Magnitude Star)
Nov 10 - Asteroid 8146 Jimbell Closest Approach To Earth (1.467 AU)
Nov 10 - Asteroid 91287 Simon-Garfunkel Closest Approach To Earth (1.478 AU)
Nov 11 - Asteroid 68 Leto At Opposition (9.6 Magnitude)
Nov 11 - Asteroid 21 Lutetia Occults TYC 6905-00146-1 (12.4 Magnitude Star)
Nov 11 - Asteroid 11548 Jerrylewis Closest Approach To Earth (1.532 AU)
Nov 11 - Asteroid 1071 Brita Closest Approach To Earth (1.538 AU)
Nov 11 - 45th Anniversary (1966), Gemini 12 Launch (Jim Lovell and Buzz Aldrin)
Nov 12 - Asteroid 40 Harmonia At Opposition (9.4 Magnitude)
Nov 12 - Asteroid 8088 Australia Closest Approach To Earth (1.000 AU)
Nov 12 - Asteroid 2830 Greenwich Closest Approach To Earth (1.742 AU)
Nov 12 - 30th Anniversary (1981), Space Shuttle Columbia Launch (STS-2)
Nov 12 - Seth Nicholson's 120th Birthday (1891)
Nov 13 - Asteroid 30 Urania At Opposition (9.6 Magnitude)
Nov 13 - Asteroid 2925 Beatty Closest Approach To Earth (1.316 AU)
Nov 13 - Asteroid 2160 Spitzer Closest Approach To Earth (1.783 AU)
Nov 13 - James Clerk Maxwell's 180th Birthday (1831)
Nov 14 - Mercury At Its Greatest Eastern Elongation (23 Degrees)
Nov 14 - 40th Anniversary (1971), Mariner 9, Mars Orbit Insertion
Nov 15 - Kuiper Belt Object 90377 Sedna At Opposition (86.067 AU)
Nov 16 - Comet 176P/LINEAR Closest Approach To Earth (1.671 AU)
Nov 16 - Comet P/2010 T1 (McNaught) Closest Approach To Earth (2.977 AU)
Nov 16 - Asteroid 1743 Schmidt Closest Approach To Earth (1.709 AU)
Nov 16 - 10th Anniversary (2001), Genesis, L1 Orbit Insertion
Nov 17 - Leonids Meteor Shower Peak
Nov 17 - Asteroid 118401 LINEAR Closest Approach To Earth (1.668 AU)
Nov 17 - 45th Anniversary (1966), Leonids Meteor Storm
Nov 19 - Asteroid 1485 Isa Occults HIP 91004 (5.5 Magnitude Star)
Nov 19 - Asteroid 38237 Roche Closest Approach To Earth (1.766 AU)
Nov 20 - Asteroid 5430 Luu Closest Approach To Earth (1.998 AU)
Nov 21 - Asteroid 5261 Eureka Closest Approach To Earth (0.514 AU)
Nov 21 - Asteroid 1284 Latvia Closest Approach To Earth (1.228 AU)
Nov 21 - Asteroid 1432 Ethiopia Closest Approach To Earth (1.257 AU)
Nov 22 - Asteroid 115 Thyra At Opposition (9.6 Magnitude)
Nov 23 - Cassini, Distant Flyby of Helene
Nov 23 - Cassini, Orbital Trim Maneuver #300 (OTM-300)
Nov 23 - Comet C/2010 G2 (Hill) Closest Approach To Earth (1.245 AU)
Nov 23 - Asteroid 2 Pallas Occults TYC 5161-00925-1 (10.0 Magnitude Star)
Nov 24 - Cassini, Distant Flyby of Enceladus, Epimetheus & Titan
Nov 24 - Asteroid 433 Eros Occults HIP 43892 (7.9 Magnitude Star)
Nov 25 - Mars Science Laboratory (MSL) Atlas 5 Launch
Nov 25 - Partial Solar Eclipse, Visible in Africa, Antarctica, Tasmania
Nov 26 - Comet P/2010 U1 (Boattini) Closest Approach To Earth (4.445 AU)
Nov 26 - Asteroid 9500 Camelot Closest Approach To Earth (1.249 AU)
Nov 27 - Cassini, Distant Flyby of Titan
Nov 27 - Asteroid 2008 KT Near-Earth Flyby (0.067 AU)
Nov 27 - 40th Anniversary (1971), Mars 2, Mars Orbit Insertion
Nov 27 - Anders Celsius' 310th Birthday (1701)
Nov 29 - Asteroid 2005 AN26 Near-Earth Flyby (0.092 AU)
Nov 29 - 50th Anniversary (1961), Mercury 5 Launch (Enos the Chimpanzee)
Nov 30 - Soyuz TMA-03M Soyuz FG Launch (International Space Station 29S)
Nov 30 - Asteroid 15 Eunomia At Opposition (7.9 Magnitude)
Nov 30 - Asteroid 1283 Komsomolia Occults HIP 112021 (6.8 Magnitude Star)
December 2011
* Dec ?? - Cygnus CRS-1 Taurus 2 (International Space Station)
Dec ?? - NROL-25 Delta 4M Launch
Dec ?? - Cosmos-Geizer N21 Proton K Launch
Dec ?? - Monitor IR1 Rokot KM Launch
Dec ?? - Bissat Cosmos 3M Launch
Dec ?? - Condor E Strela Launch
Dec ?? - Gonets M5, M6 & M7 /Rokot KM Launch
Dec ?? - Zohreh 1 Soyuz FG-Fregat Launch
Dec ?? - Sirius FM-6 Proton M-Briz M Launch
Dec ?? - Zi Yuan 3A CZ-4B Launch (China)
Dec ?? - Yahsat 1B Proton M-Briz M Launch
Dec ?? - Wideband Gapfiller Satellite (WGS) F-4 Delta 4 Launch
* Dec ?? - Shiyan Weixing 4/Chuang Xin 3 CZ-2D Launch (China)
* Dec ?? - Globalstar 2 (19-24) Soyuz 2-1a-Fregat Launch
* Dec ?? - Cosmos-Glonass K1 N2 Soyuz 2-1B-Fregat Launch
Dec 01 - Cassini, Orbital Trim Maneuver #300A (OTM-300A)
Dec 01 - Asteroid 51828 Ilanramon Closest Approach To Earth (1.439 AU)
Dec 02 - Asteroid 7853 Confucius Closest Approach To Earth (2.091 AU)
Dec 02 - Kuiper Belt Object 84922 (2003 VS2) At Opposition (35.535 AU)
Dec 02 - 40th Anniversary (1971), Mars 3, Mars Orbit Insertion
Dec 03 - Asteroid 1850 Kohoutek Closest Approach To Earth (1.543 AU)
Dec 04 - 15th Anniversary (1996), Mars Pathfinder Launch
Dec 04 - Wilhelm Tempel's 190th Birthday (1821)
Dec 05 - Asteroid 6735 Madhatter Closest Approach To Earth (1.001 AU)
Dec 05 - Asteroid 9250 Chamberlin Closest Approach To Earth (2.806 AU)
Dec 06 - Asteroid 11911 Angel Closest Approach To Earth (2.002 AU)
Dec 06 - Asteroid 426 Hippo Closest Approach To Earth (2.012 AU)
* Dec 07 - Dragon CRS-1/CU-Sat 1 & 2 Falcon 9 Launch (International
Space Station)
Dec 07 - Comet 243P/NEAT Closest Approach To Earth (2.041 AU)
Dec 07 - Kuiper Belt Object 19521 Chaos At Opposition (40.642 AU)
Dec 07 - Kuiper Belt Object 2004 XR190 At Opposition (56.839 AU)
Dec 07 - 10th Anniversary (2001), Jason/TIMED Launch
Dec 08 - Comet P/2010 T2 (PANSTARRS) Closest Approach To Earth (2.845 AU)
Dec 08 - Asteroid 4 Vesta Occults TYC 6379-00925-1 (11.7 Magnitude Star)
Dec 08 - Asteroid 2041 Lancelot Closest Approach To Earth (1.591 AU)
Dec 08 - Asteroid 1940 Whipple Closest Approach To Earth (1.872 AU)
Dec 09 - Cassini, Orbital Trim Maneuver #301 (OTM-301)
Dec 09 - Comet 97P/Metcalf-Brewington Closest Approach To Earth (1.809 AU)
Dec 10 - Total Lunar Eclipse
Dec 10 - Asteroid 5143 Heracles Closest Approach To Earth (0.197 AU)
Dec 11 - Comet 37P/Forbes Perihelion (1.575 AU)
Dec 11 - Comet C/2009 S3 (Lemmon) Perihelion (6.474 AU)
Dec 12 - Cassini, Dione Flyby
Dec 12 - Cassini, Distant Flyby of Calypso, Enceladus & Tethys
Dec 12 - Asteroid 1243 Pamela Occults HIP 30722 (6.6 Magnitude Star)
Dec 12 - Asteroid 10389 Robmanning Closest Approach To Earth (1.192 AU)
Dec 12 - 50th Anniversary (1961), Oscar 1 Launch
Dec 13 - Cassini, Titan Flyby
Dec 13 - Geminids Meteor Shower Peak
Dec 13 - Comet P/2010 R2 (La Sagra) Closest Approach To Earth (2.244 AU)
Dec 13 - Asteroid 433 Eros Occults HIP 48614 (8.9 Magnitude Star)
Dec 13 - Asteroid 79896 Billhaley Closest Approach To Earth (1.553 AU)
Dec 14 - Cygnus Demo Taurus 2 Launch (International Space Station)
Dec 14 - Comet 244P/Scotti Closest Approach To Earth (2.937 AU)
Dec 14 - Asteroid 2004 BG41 Near-Earth Flyby (0.033 AU)
Dec 14 - Asteroid 1814 Bach Closest Approach To Earth (0.954 AU)
Dec 14 - Asteroid 2753 Duncan Closest Approach To Earth (1.732 AU)
Dec 14 - Tycho Brahe's 465th Birthday (1546)
Dec 15 - NROL-15 Delta 4-Heavy Launch
Dec 15 - Comet 71P/Clark Perihelion (1.567 AU)
Dec 15 - Asteroid 1607 Mavis Occults HIP 116591 (5.7 Magnitude Star)
Dec 15 - Asteroid 4342 Freud Closest Approach To Earth (1.927 AU)
Dec 15 - Asteroid 697 Galilea Closest Approach To Earth (1.948 AU)
Dec 15 - 45th Anniversary (1966), Audouin Dollfus' Discovery of Saturn Moon Janus
* Dec 16 - Comet C/2011 A3 (Gibbs) Perihelion (2.344 AU)
Dec 16 - Giovanni Donati's 185th Birthday (1826)
Dec 17 - Cassini, Orbital Trim Maneuver #303 (OTM-303)
Dec 18 - Asteroid 25143 Itokawa Closest Approach To Earth (1.760 AU)
Dec 19 - Comet 238P/Read Closest Approach To Earth (1.821 AU)
Dec 19 - Asteroid 7359 Messier Closest Approach To Earth (1.728 AU)
Dec 19 - 15th Anniversary (1996), Galileo, Europa 4 Flyby
Dec 21 - Asteroid 2008 YQ27 Near-Earth Flyby (0.089 AU)
Dec 21 - Asteroid 5231 Verne Closest Approach To Earth (1.315 AU)
Dec 21 - Asteroid 1541 Estonia Closest Approach To Earth (1.831 AU)
Dec 21 - 45th Anniversary (1966), Luna 13 Launch (USSR Moon Lander)
Dec 22 - Winter Solstice, 05:30 UT
Dec 22 - Cassini, Orbital Trim Maneuver #304 (OTM-304)
Dec 22 - Ursids Meteor Shower Peak
Dec 22 - Asteroid 4808 Ballaero Closest Approach To Earth (1.267 AU)
Dec 22 - Asteroid 203 Pompeja Closest Approach To Earth (1.635 AU)
Dec 22 - Asteroid 12104 Chesley Closest Approach To Earth (2.097 AU)
Dec 23 - Mercury At Its Greatest Western Elongation (22 Degrees)
Dec 23 - Comet C/2009 P1 (Garradd) Perihelion (1.551 AU)
Dec 23 - Asteroid 19148 Alaska Closest Approach To Earth (2.136 AU)
Dec 24 - Asteroid 2008 AF3 Near-Earth Flyby (0.092 AU)
Dec 24 - Jean-Louis Pons' 250th Birthday (1761)
Dec 26 - Asteroid 2000 YA Near-Earth Flyby (0.007 AU)
Dec 26 - Asteroid 2001 YE4 Near-Earth Flyby (0.067 AU)
Dec 26 - Asteroid 1143 Odysseus Closest Approach To Earth (3.790 AU)
Dec 27 - Progress M-14M Soyuz U Launch (International Space Station 46P)
Dec 27 - Johannes Kepler's 440th Birthday (1571)
Dec 28 - Asteroid 2003 AK18 Near-Earth Flyby (0.057 AU)
Dec 28 - Asteroid 1024 Hale Closest Approach To Earth (1.848 AU)
Dec 29 - Comet 36P/Whipple Perihelion (3.088 AU)
Dec 29 - Asteroid 4148 McCartney Closest Approach To Earth (1.235 AU)
Dec 30 - Comet P/2006 F1 (Kowalski) Closest Approach To Earth (4.142 AU)
Dec 30 - Asteroid 21 Lutetia Occults TYC 6363-00737-1 (10.0 Magntidue Star)
Dec 30 - Asteroid 1620 Geographos Closest Approach To Earth (0.697 AU)
Dec 30 - Asteroid 5254 Ulysses Closest Approach To Earth (3.772 AU)
Dec 30 - Asteroid 3552 Don Quixote Closest Approach To Earth (5.244 AU)
Dec 31 - Comet C/2009 F4 (McNaught) Perihelion (5.455 AU)
January 2012
Jan ?? - Astrosat 1 PSLV Launch (India)
Jan ?? - Cassiope 1 Falcon 9 Launch
Jan ?? - Equars VLS-1 Launch (Brazil)
Jan ?? - Cosmos-Prognoz N11 Proton K-DM2 Launch
Jan ?? - Chinasat 9A CZ-3B Launch
Jan ?? - Amsat Phase 3E Express Ariane 5 Launch
Jan ?? - SRE-2 PSLV Launch
Jan ?? - Dragonlab 1 Falcon 9 Launch
Jan ?? - Tugsat 1 (Brite-Austria) Dnepr 1 Launch
Jan ?? - Insat 3-D GSLV Launch (India)
Jan ?? - TerreStar 2 Ariane 5 Launch
Jan ?? - SARAL/Sapphire/CanX-3 PSLV Launch
Jan ?? - NROL-29 Atlas 5 Launch
Jan ?? - Astra 4-B (SES-5) Proton M-Briz M Launch
* Jan ?? - Galileo IOV 3 & 4 Soyuz 2-1B-Fregat Launch
Jan ?? - 10th Anniversary (2002), Discovery of NWA 1110 Meteorite (Mars Meteorite)
* Jan 01 - Comet C/2011 G1 (McNaught) Closest Approach To Earth (1.448 AU)
Jan 02 - Cassini, Titan Flyby
Jan 02 - Asteroid 2007 BD Near-Earth Flyby (0.093 AU)
Jan 02 - Asteroid 3153 Lincoln Closest Approach To Earth (1.345 AU)
Jan 03 - Quadrantids Meteor Shower Peak
Jan 04 - Cassini, Distant Flyby of Helene, Mimas & Janus
Jan 04 - Asteroid 2003 AF23 Near-Earth Flyby (0.036 AU)
Jan 04 - Asteroid 2008 SA Near-Earth Flyby (0.060 AU)
Jan 05 - Earth At Perihelion (0.983 AU From Sun)
Jan 05 - Asteroid 4535 Adamcarolla Closest Approach To Earth (2.095 AU)
Jan 06 - Comet P/2009 SK280 (Spacewatch-Hill) Closest Approach To Earth (3.909 AU)
Jan 06 - Asteroid 73079 Davidbaltimore Closest Approach To Earth (1.710 AU)
Jan 06 - Asteroid 1373 Cincinnati Closest Approach To Earth (1.870 AU)
Jan 07 - Comet 131P/Mueller 2 Perihelion (2.418 AU)
Jan 08 - Comet P/2011 C2 (Gibbs) Perihelion (5.386 AU)
Jan 08 - Asteroid 1322 Coppernicus Closest Approach To Earth (2.043 AU)
Jan 08 - 20th Anniversary (1992), Sakigake, Earth Flyby
Jan 08 - Stephen Hawking's 70th Birthday (1942)
Jan 08 - Johannes Fabricius' 425th Birthday (1587)
* Jan 09 - Asteroid 2011 AC3 Near-Earth Flyby (0.080 AU)
Jan 09 - Asteroid 18458 Caesar Closest Approach To Earth (1.394 AU)
Jan 09 - Asteroid 742 Edisona Closest Approach To Earth (2.206 AU)
Jan 10 - Asteroid 5020 Asimov Closest Approach To Earth (1.505 AU)
Jan 11 - Comet P/2004 T1 (LINEAR-NEAT) Closest Approach To Earth (1.863 AU)
Jan 11 - Comet P/2008 O2 (McNaught) Closest Approach To Earth (3.758 AU)
Jan 11 - Asteroid 2002 BF25 Near-Earth Flyby (0.068 AU)
Jan 11 - Asteroid 3895 Earhart Closest Approach To Earth (1.213 AU)
Jan 11 - Asteroid 4446 Carolyn Closest Approach To Earth (4.065 AU)
Jan 11 - Asteroid 11998 Fermilab Closest Approach To Earth (2.456 AU)
Jan 11 - 225th Anniversary (1787), William Herschell's Discovery of Uranus Moons
Titania and Oberon
Jan 12 - HTV-3 H-2B Launch (International Space Station, Japan)
Jan 12 - Comet P/2006 T1 (Levy) Perihelion (1.007 AU)
Jan 12 - Comet 78P/Gehrels Perihelion (2.009 AU)
Jan 12 - Asteroid 99942 Apophis Closest Approach To Earth (0.613 AU)
Jan 12 - Asteroid 37582 Faraday Closest Approach To Earth (1.446 AU)
Jan 13 - Asteroid 3173 McNaught Closest Approach To Earth (1.685 AU)
Jan 13 - Asteroid 588 Achilles Closest Approach To Earth (3.497 AU)
Jan 14 - Asteroid 2005 BU Near-Earth Flyby (0.054 AU)
Jan 14 - Asteroid 1000 Piazzia Closest Approach To Earth (2.725 AU)
Jan 14 - Wilhelm Beer's 215th Birthday (1797)
Jan 16 - Cassini, Orbital Trim Maneuver #306 (OTM-306)
Jan 16 - Asteroid 4147 Lennon Closest Approach To Earth (1.459 AU)
Jan 17 - Kuiper Belt Object 208996 (2003 AZ84) At Opposition (44.218 AU)
Jan 17 - 10th Anniversary (2002), Galileo, Io 33 Flyby
Jan 17 - Harvey Nininger's 125th Birthday (1887)
Jan 18 - Asteroid 13926 Berners-Lee Closest Approach To Earth (1.652 AU)
Jan 18 - Asteroid 16809 Galapagos Closest Approach To Earth (1.799 AU)
Jan 18 - Asteroid 5661 Hildebrand Closest Approach To Earth (3.814 AU)
Jan 19 - 10th Anniversary (2002), Discovery of SAU 090 Meteorite (Mars Meteorite)
Jan 19 - Johann Bode's 265th Birthday (1747)
Jan 20 - Comet 244P/Scotti Perihelion (3.918 AU)
Jan 21 - Asteroid 4341 Poseidon Closest Approach To Earth (0.397 AU)
Jan 21 - Asteroid 2801 Huygens Closest Approach To Earth (2.141 AU)
Jan 21 - Asteroid 624 Hektor Closest Approach To Earth (4.202 AU)
Jan 22 - Comet P/2006 T1 (Levy) Closest Approach To Earth (0.192 AU)
Jan 22 - Asteroid 1772 Gagarin Closest Approach To Earth (1.411 AU)
Jan 23 - Chinese New Year
Jan 23 - Asteroid 1193 Africa Closest Approach To Earth (1.808 AU)
Jan 24 - Asteroid 757 Portlandia Closest Approach To Earth (1.255 AU)
Jan 24 - Asteroid 3354 McNair Closest Approach To Earth (1.558 AU)
Jan 24 - Asteroid 4151 Alanhale Closest Approach To Earth (1.739 AU)
Jan 24 - Asteroid 16035 Sasandford Closest Approach To Earth (2.053 AU)
Jan 24 - Asteroid 8721 AMOS Closest Approach To Earth (2.969 AU)
Jan 24 - Harold Babcock's 130th Birthday (1882)
Jan 25 - Asteroid 7341 (1991 VK) Near-Earth Flyby (0.065 AU)
Jan 25 - Asteroid 25924 Douglasadams Closest Approach To Earth (1.712 AU)
Jan 26 - Asteroid 5641 McCleese Closest Approach To Earth (0.876 AU)
Jan 26 - Asteroid 3693 Barringer Closest Approach To Earth (2.458 AU)
Jan 26 - 50th Anniversary (1962), Ranger 3 Launch
Jan 27 - Asteroid 36800 Katarinawitt Closest Approach To Earth (1.533 AU)
Jan 27 - 45th Anniversary (1967), Apollo 1 Fire (Gus Grissom, Edward White &
Roger Chaffee)
Jan 28 - Asteroid 1157 Arabia Closest Approach To Earth (2.638 AU)
Jan 30 - Cassini, Titan Flyby
Jan 30 - Asteroid 2010 WU8 Near-Earth Flyby (0.077 AU)
Jan 30 - Asteroid 6487 Tonyspear Closest Approach To Earth (2.076 AU)
Jan 30 - Asteroid 83360 Catalina Closest Approach To Earth (2.116 AU)
Jan 31 - Asteroid 433 Eros Closest Approach To Earth (0.177 AU)
February 2012
Feb ?? - Lapan-A2 PSLV Launch
Feb ?? - AFSPC-2 Atlas 5 Launch
Feb ?? - EuropaSat Proton M-Briz M Launch
Feb ?? - G-Sat 10 Ariane 5 Launch
Feb ?? - Soyuz-Sat-O Rokot KM Launch
Feb ?? - Meridian 5 Soyuz 2-1a-Fregat Launch
* Feb ?? - Dialog 1 Rokot-Briz Launch
Feb 01 - Comet 164P/Christensen Closest Approach To Earth (1.840 AU)
Feb 01 - Asteroid 2006 CJ Near-Earth Flyby (0.045 AU)
Feb 01 - Asteroid 2008 EP6 Near-Earth Flyby (0.062 AU)
Feb 01 - Asteroid 2006 SU217 Near-Earth Flyby (0.068 AU)
Feb 01 - Asteroid 2007 MR Near-Earth Flyby (0.073 AU)
Feb 01 - Asteroid 9134 Encke Closest Approach To Earth (2.018 AU)
Feb 01 - Asteroid 1832 Mrkos Closest Approach To Earth (2.308 AU)
Feb 02 - Cassini, Orbital Trim Maneuver #308 (OTM-308)
Feb 02 - Asteroid 2848 ASP Closest Approach To Earth (2.278 AU)
Feb 02 - 35th Anniverary (1977), Burnup of the Salyut 4 Space Station (USSR)
Feb 03 - NuStar Pegasus XL Launch
Feb 03 - Asteroid 477 Italia Closest Approach To Earth (1.858 AU)
Feb 03 - Asteroid 30444 Shemp Closest Approach To Earth (2.179 AU)
Feb 04 - Asteroid 5049 Sherlock Closest Approach To Earth (1.410 AU)
Feb 04 - Asteroid 9007 James Bond Closest Approach To Earth (1.602 AU)
Feb 04 - Asteroid 4444 Escher Closest Approach To Earth (1.648 AU)
Feb 04 - 45th Anniverary (1967), Lunar Orbiter 3 Launch
Feb 05 - Comet 49P/Arend-Rigaux Closest Approach To Earth (1.025 AU)
Feb 05 - Asteroid 19383 Rolling Stones Closest Approach To Earth (1.663 AU)
Feb 05 - Asteroid 1996 Adams Closest Approach To Earth (1.855 AU)
Feb 06 - Comet 69P/Taylor Closest Approach To Earth (1.789 AU)
Feb 07 - Comet C/2010 M1 (Gibbs) Perihelion (2.299 AU)
Feb 07 - Asteroid 4923 Clarke Closest Approach To Earth (1.570 AU)
Feb 08 - 20th Anniversay (1992), Ulysses, Jupiter Flyby
Feb 09 - Asteroid 763 Cupido Closest Approach To Earth (1.425 AU)
Feb 10 - Cassini, Orbital Trim Maneuver #309 (OTM-309)
Feb 10 - Comet 21P/Giacobini-Zinner Closest Approach To Earth (1.850 AU)
Feb 10 - Asteroid 3623 Chaplin Closest Approach To Earth (2.073 AU)
Feb 11 - Comet 21P/Giacobini-Zinner Perihelion (1.030 AU)
Feb 11 - Asteroid 5649 Donnashirley Closest Approach To Earth (1.004 AU)
Feb 11 - Asteroid 3783 Morris Closest Approach To Earth (1.688 AU)
Feb 11 - Asteroid 8734 Warner Closest Approach To Earth (1.942 AU)
Feb 11 - Asteroid 13070 Seanconnery Closest Approach To Earth (2.091 AU)
Feb 11 - Asteroid 253 Mathilde Closest Approach To Earth (2.334 AU)
Feb 12 - Asteroid 784 Pickeringia Closest Approach To Earth (2.332 AU)
Feb 12 - Kuiper Belt Object 55565 (2002 AW197) At Opposition (45.228 AU)
Feb 12 - 65th Anniversary (1947), Sikhote Alin Meteorite Fall in Russia
Feb 13 - John Dreyer's 160th Birthday (1852)
Feb 14 - 40th Anniversary (1972), Luna 20 Launch (Soviet Moon Sample Return)
Feb 15 - Cassini, Orbital Trim Maneuver #310 (OTM-310)
Feb 15 - Comet 198P/ODAS Perihelion (1.997 AU)
Feb 15 - 20th Anniversary (1992), Hiten, Moon Flyby
Feb 16 - Asteroid 243 Ida Closest Approach To Earth (1.837 AU)
Feb 17 - Asteroid 1993 DA Near-Earth Flyby (0.041 AU)
Feb 17 - Asteroid 1221 Amor Closest Approach To Earth (0.736 AU)q
Feb 17 - Asteroid 136 Austria Closest Approach To Earth (1.503 AU)
Feb 18 - Asteroid 11945 Amsterdam Closest Approach To Earth (2.436 AU)
Feb 19 - Cassini, Titan Flyby
Feb 19 - Asteroid 162421 (2000 ET70) Near-Earth Flyby (0.045 AU)
* Feb 19 - Asteroid 38086 Beowolf Closest Approach To Earth (1.183 AU)
Feb 19 - Asteroid 10217 Richardcook Closest Approach To Earth (2.187 AU)
Feb 19 - Asteroid 498 Tokio Closest Approach To Earth (2.263 AU)
Feb 20 - Cassini, Distant Flyby of Polydeuces
Feb 20 - Asteroid 5471 Tunguska Closest Approach To Earth (2.168 AU)
Feb 20 - 15th Anniverary (1997), Galileo, Europa 6 Flyby
Feb 20 - 50th Anniversary (1962), Friendship 7 Launch (John Glenn)
Feb 21 - Cassini, Distant Flyby of Telesto, Enceladus, Pallene, Dione &
Rhea
Feb 21 - Kuiper Belt Object 90482 Orcus At Opposition (47.023 AU)
Feb 22 - Cassini, Orbital Trim Maneuver #311 (OTM-311)
Feb 22 - Asteroid 82332 Las Vegas Closest Approach To Earth (1.620 AU)
* Feb 23 - Asteroid 2011 CP4 Near-Earth Flyby (0.023 AU)
Feb 23 - Asteroid 719 Albert Closest Approach To Earth (3.075 AU)
Feb 23 - 25th Anniverary (1987), Supernova 1987A Explosion
Feb 25 - Asteroid 3066 McFadden Closest Approach To Earth (1.833 AU)
Feb 25 - Asteroid 5811 Keck Closest Approach To Earth (2.402 AU)
Feb 25 - Asteroid 9252 Goddard Closest Approach To Earth (2.608 AU)
Feb 25 - 5th Annivesary (2007), Rosetta, Mars Flyby
Feb 26 - Comet 105P/Singer Brewster Perihelion (2.051 AU)
Feb 26 - Asteroid 2010 RF12 Near-Earth Flyby (0.096 AU)
Feb 27 - Asteroid 1776 Kuiper Closest Approach To Earth (2.084 AU)
Feb 27 - Asteroid 5102 Benfranklin Closest Approach To Earth (2.260 AU)
Feb 27 - Bernard Lyot's 115th Birthday (1897)
Feb 28 - Asteroid 2002 QC7 Near-Earth Flyby (0.071 AU)
Feb 28 - Asteroid 10044 Squyres Closest Approach To Earth (2.418 AU)
Feb 28 - 5th Anniversary (2007), New Horizons, Jupiter Flyby
Feb 29 - ATV-3 Edoardo Amaldi Ariane 5ES Launch (International Space Station)
Feb 29 - Asteroid 7336 Saunders Closest Approach To Earth (2.344 AU)
March 2012
Mar ?? - Meteor M-2 Soyuz 2-1b-Fregat Launch
Mar ?? - Orbcomm 2-3, 2-4 & 2-5 Falcon 1e Launch
Mar ?? - Resurs P-1 Soyuz 2-1b Launch
Mar ?? - GPS 2F-3 Atlas 5 Launch
Mar ?? - Intelsat 21 Proton M-Briz M Launch
* Mar ?? - G-Sat 6 (Insat 4-E) GSLV Launch
Mar ?? - 10th Anniversary (2002), Discovery of NWA 1195 Meteorite (Mars Meteorite)
Mar 01 - Asteroid 3352 McAuliffe Closest Approach To Earth (0.410 AU)
Mar 01 - 30th Anniversary (1982), Venera 13, Venus Landing/Flyby (USSR)
Mar 02 - Asteroid 2933 Amber Closest Approach To Earth (1.749 AU)
Mar 02 - 40th Anniversary (1972), Pioneer 10 Launch (Jupiter Flyby Mission)
Mar 03 - Mars at Opposition
Mar 04 - Asteroid 1862 Apollo Closest Approach To Earth (1.219 AU)
Mar 04 - Asteroid 3673 Levy Closest Approach To Earth (1.432 AU)
Mar 04 - Asteroid 6032 Nobel Closest Approach To Earth (2.003 AU)
Mar 04 - Asteroid 1640 Nemo Closest Approach To Earth (2.073 AU)
Mar 05 - Mercury At Its Greatest Eastern Elongation (18 Degrees)
Mar 05 - Asteroid 4055 Magellan Closest Approach To Earth (1.355 AU)
Mar 05 - Asteroid 13208 Fraschetti Closest Approach To Earth (1.885 AU)
Mar 05 - 30th Anniversary (1982), Venera 14, Venus Landing/Flyby (USSR)
Mar 05 - Gerard Mercator's 500th Birthday (1512)
Mar 06 - Cassini, Distant Flyby of Titan
Mar 06 - Asteroid 2008 EJ85 Near-Earth Flyby (0.024 AU)
Mar 06 - Asteroid 1958 Chandra Closest Approach To Earth (2.486 AU)
Mar 06 - Gordon Cooper's 85th Birthday (1927)
Mar 06 - Joseph Fraunhofer's 225th Birthday (1787)
Mar 07 - Asteroid 2710 Veverka Closest Approach To Earth (1.126 AU)
Mar 07 - Asteroid 416 Vaticana Closest Approach To Earth (1.791 AU)
Mar 07 - Henry Draper's 175th Birthday (1837)
Mar 07 - John Herschel's 220th Birthday (1792)
Mar 08 - Cassini, Distant Flyby of Hyperion
Mar 08 - Asteroid 1537 Transylvania Closest Approach To Earth (2.797 AU)
Mar 08 - 35th Annversary (1977), Discovery of Uranus' Rings
Mar 09 - Cassini, Distant Flyby of Titan, Helene & Enceladus
Mar 09 - Cassini, Orbital Trim Maneuver #312 (OTM-312)
* Mar 09 - Asteorid 2011 EC12 Near-Earth Flyby (0.094 AU)
Mar 09 - Asteroid 2247 Hiroshima Closest Approach To Earth (1.628 AU)
Mar 09 - Asteroid 327 Columbia Closest Approach To Earth (1.902 AU)
Mar 09 - Asteroid 17640 Mount Stromlo Closest Approach To Earth (2.035 AU)
Mar 10 - Cassini, Distant Flyby of Prometheus, Epimetheus, Calypso & Rhea
Mar 10 - Asteroid 1886 Lowell Closest Approach To Earth (1.934 AU)
Mar 10 - Asteroid 3061 Cook Closest Approach To Earth (2.695 AU)
Mar 11 - Daylight Saving - Set Clock Ahead 1 Hour (United States)
Mar 11 - Asteroid 2476 Andersen Closest Approach To Earth (2.411 AU)
Mar 11 - Asteroid 2246 Bowell Closest Approach To Earth (2.597 AU)
Mar 12 - Comet 91P/Russell Closest Approach To Earth (2.363 AU)
Mar 12 - Asteroid 2010 SV3 Near-Earth Flyby (0.058 AU)
Mar 12 - Asteroid 4766 Malin Closest Approach To Earth (1.554 AU)
Mar 12 - Asteroid 4511 Rembrandt Closest Approach To Earth (1.801 AU)
Mar 12 - Asteroid 5790 Nagasaki Closest Approach To Earth (1.902 AU)
Mar 14 - Asteroid 2008 EY5 Near-Earth Flyby (0.088 AU)
Mar 15 - Cassini, Orbital Trim Maneuver #312A (OTM-312A)
Mar 16 - Asteroid 6373 Stern Closest Approach To Earth (1.424 AU)
Mar 16 - 50th Anniversary (1962), 1st Titan 2 Rocket Launch
Mar 17 - Asteroid 736 Harvard Closest Approach To Earth (1.548 AU)
Mar 17 - Asteroid 7610 Sudbury Closest Approach To Earth (1.887 AU)
Mar 17 - Asteroid 99905 Jeffgrossman Closest Approach To Earth (2.521 AU)
* Mar 17 - Dwarf Planet 136472 Makemake At Opposition (51.386 AU)
Mar 17 - 10th Anniversary (2002), GRACE Launch
Mar 18 - MESSENGER, End of Primary Mission
Mar 19 - Comet 228P/LINEAR Closest Approach To Earth (2.532 AU)
Mar 19 - Asteroid 14967 Madrid Closest Approach To Earth (1.935 AU)
Mar 19 - Asteroid 12760 Maxwell Closest Approach To Earth (2.335 AU)
Mar 19 - Asteroid 5281 Lindstrom Closest Approach To Earth (2.367 AU)
Mar 20 - Vernal Equinox, 05:14 UT
Mar 20 - Comet P/2011 C2 (Gibbs) Closest Approach To Earth (4.398 AU)
Mar 21 - Asteroid 1756 Giacobini Closest Approach To Earth (2.039 AU)
Mar 22 - Asteroid 2010 FR9 Near-Earth Flyby (0.047 AU)
Mar 22 - Asteroid 2906 Caltech Closest Approach To Earth (2.678 AU)
Mar 22 - 30th Anniversary (1982), STS-3, Space Shuttle Columbia Launch
Mar 23 - Asteroid 12485 Jenniferharris Closest Approach To Earth (1.872 AU)
Mar 23 - Asteroid 21564 Widmanstatten Closest Approach To Earth (2.654 AU)
Mar 23 - Wernher von Braun's 100th Birthday (1912)
Mar 24 - Cassini, Orbital Trim Maneuver #313 (OTM-313)
Mar 24 - Asteroid 55 Pandora Closest Approach To Earth (2.149 AU)
Mar 24 - Asteroid 334 Chicago Closest Approach To Earth (2.910 AU)
Mar 25 - Asteroid 6560 Pravdo Closest Approach To Earth (1.471 AU)
* Mar 26 - Asteroid 2097 Galle Closest Approach To Earth (2.899 AU)
Mar 27 - Cassini, Enceladus Flyby
Mar 27 - Cassini, Distany Flyby of Polydeuces, Prometheus & Janus
Mar 27 - Venus At Its Greatest Eastern Elongation (46 Degrees)
Mar 27 - Asteroid 6434 Jewitt Closest Approach To Earth (1.829 AU)
Mar 27 - 40th Anniversary (1972), Venera 8 Launch (USSR Venus
Lander/Orbiter Mission)
Mar 28 - Cassini, Distant Flyby of Dione
Mar 28 - 210th Anniversary (1802), Heinrich Olbers' Discovery of Asteroid 2 Pallas
Mar 29 - Asteroid 8256 Shenzhou Closest Approach To Earth (1.464 AU)
Mar 29 - Asteroid 4783 Wasson Closest Approach To Earth (1.505 AU)
Mar 29 - Asteroid 1886 Lowell Closest Approach To Earth (1.672 AU)
Mar 29 - Asteroid 916 America Closest Approach To Earth (1.935 AU)
Mar 29 - 205th Anniversary (1807), Heinrich Olbers' Discovery of Asteroid 4 Vesta
* Mar 30 - Soyuz TMA-04M Soyuz FG Launch
Mar 30 - Cassini, Orbital Trim Maneuver #314 (OTM-314)
Mar 30 - Asteroid 5382 McKay Closest Approach To Earth (1.393 AU)
Mar 30 - Asteroid 7536 Fahrenheit Closest Approach To Earth (1.981 AU)
Mar 31 - Comet 29P/Schwassmann-Wachmann 1 Closest Approach To Earth (5.272 AU)
April 2012
* Apr ?? - NROL-39 Atlas 5 Launch
* Apr ?? - Kanopus V N2 Rokot KM Launch
* Apr ?? - CBERS 3 CZ-4B Launch
* Apr ?? - Meteor 3M N2 Soyuz 2-1B Launch
* Apr ?? - AEHF F-2 Atlas 5 Launch
* Apr ?? - Jupiter 1 Ariane 5 Launch
* Apr ?? - SSR-1 VSL-1 Launch (Brazil)
* Apr 01 - Asteroid 2008 CH70 Near-Earth Flyby (0.087 AU)
* Apr 01 - Asteroid 2224 Tucson Closest Approach To Earth (1.915 AU)
* Apr 01 - Asteroid 9860 Archaeopteryx Closest Approach To Earth (2.265 AU)
* Apr 01 - Asteroid 3581 Alvarez Closest Approach To Earth (2.569 AU)
* Apr 02 - MetOp-B Soyuz 2-1A-Fregat Launch
* Apr 03 - Comet 242P/Spahr Perihelion (3.980 AU)
* Apr 03 - Asteroid 2010 GD35 Near-Earth Flyby (0.064 AU)
* Apr 03 - Asteroid 7225 Huntress Closest Approach To Earth (1.187 AU)
* Apr 05 - Cassini, Orbital Trim Maneuver #315 (OTM-315)
* Apr 05 - Comet P/2005 L1 (McNaught) Closest Approach To Earth (2.943 AU)
* Apr 05 - Asteroid 2004 TB10 Near-Earth Flyby (0.093 AU)
* Apr 05 - Asteroid 12397 Peterbrown Closest Approach To Earth (1.852 AU)
* Apr 05 - 15th Anniversary (1997), Galileo, Ganymede 7 Flyby
* Apr 07 - Asteroid 582 Olympia Closest Approach To Earth (1.782 AU)
* Apr 08 - Easter Sunday
* Apr 08 - Asteroid 6377 Cagney Closest Approach To Earth (1.352 AU)
* Apr 08 - Dwarf Planet 136108 Haumea At Opposition (50.016 AU)
* Apr 09 - Asteroid 2829 Bobhope Closest Approach To Earth (2.195 AU)
* Apr 10 - Asteroid 2004 FG11 Near-Earth Flyby (0.057 AU)
* Apr 10 - Asteroid 4116 Elachi Closest Approach To Earth (0.810 AU)
* Apr 10 - Asteroid 3325 TARDIS Closest Approach To Earth (2.193 AU)
* Apr 11 - Cassini, Orbital Trim Maneuver #316 (OTM-316)
* Apr 11 - Asteroid 7934 Sinatra Closest Approach To Earth (1.388 AU)
* Apr 12 - Comet 246P/NEAT Closest Approach To Earth (2.310 AU)
* Apr 12 - Asteroid 5703 Hevelius Closest Approach To Earth (1.972 AU)
* Apr 12 - Yuri's Night: World Space Party
* Apr 13 - TDRS-K Atlas 5 Launch
* Apr 13 - Asteroid 2004 RQ252 Near-Earth Flyby (0.039 AU)
* Apr 13 - Asteroid 9950 ESA Closest Approach To Earth (2.574 AU)
* Apr 14 - Cassini, Enceladus Flyby
* Apr 14 - Cassini, Distant Flyby of Helene, Dione, Promentheus, Pandora,
Titan & Tethys
* Apr 14 - Asteroid 1631 Kopff Closest Approach To Earth (1.501 AU)
* Apr 14 - Asteroid 397 Vienna Closest Approach To Earth (2.258 AU)
* Apr 15 - Saturn At Opposition
* Apr 15 - Asteroid 9777 Enterprise Closest Approach To Earth (1.343 AU)
* Apr 15 - Asteroid 439 Ohio Closest Approach To Earth (2.230 AU)
* Apr 15 - Leonhard Euler's 305th Birthday (1707)
* Apr 16 - Cassini, Distant Flyby of Hyperion
* Apr 16 - Comet C/2006 S3 (LONEOS) Perihelion (5.131 AU)
* Apr 16 - Asteroid 16761 Hertz Closest Approach To Earth (2.110 AU)
* Apr 16 - 40th Anniversary (1972), Apollo 16 Launch (Manned Moon Landing)
* Apr 16 - Wilbur Wright's 145th Birthday (1867)
* Apr 16 - Leonardo DaVinci's 560th Birthday (1452)
* Apr 17 - Progress M-15M Soyuz U Launch (Internatiional Space Station 47P)
* Apr 17 - Cassini, Orbital Trim Maneuver #317 (OTM-317)
* Apr 17 - Asteroid 2007 HV4 Near-Earth Flyby (0.018 AU)
* Apr 17 - Asteroid 12002 Sues Closest Approach To Earth (2.110 AU)
* Apr 17 - 45th Anniversary (1967), Surveyor 3 Launch (Moon Lander)
* Apr 18 - Mercury At Its Greatest Western Elongation (27 Degrees)
* Apr 19 - Asteroid 2865 Laurel Closest Approach To Earth (1.469 AU)
* Apr 19 - 30th Anniversary (1982), Salyut 7 Space Station Launch
* Apr 21 - Asteroid 2009 HU44 Near-Earth Flyby (0.087 AU)
* Apr 22 - Lyrids Meteor Shower Peak
* Apr 22 - Asteroid 2620 Santana Closest Approach To Earth (2.056 AU)
* Apr 22 - Asteroid 341 California Closest Approach To Earth (1.323 AU)
* Apr 23 - Asteroid 2003 WH166 Near-Earth Flyby (0.055 AU)
* Apr 23 - Asteroid 9253 Oberth Closest Approach To Earth (1.620 AU)
* Apr 23 - 45th Anniversary (1967), Soyuz 1 Launch
* Apr 23-29 - Astronomy Week
* Apr 24 - Cassini, Orbital Trim Maneuver #318 (OTM-318)
* Apr 24 - Asteroid 149 Medusa Closest Approach To Earth (1.304 AU)
* Apr 24 - Asteroid 37452 Spirit Closest Approach To Earth (3.820 AU)
* Apr 25 - Asteroid 1094 Siberia Closest Approach To Earth (1.714 AU)
* Apr 26 - Asteroid 2074 Shoemaker Closest Approach To Earth (0.950 AU)
* Apr 26 - Asteroid 589 Croatia Closest Approach To Earth (2.261 AU)
* Apr 26 - Asteroid 4169 Celsius Closest Approach To Earth (2.970 AU)
* Apr 26 - 50th Anniversary (1962), Cosmos-4 Launch (1st USSR Weather Satellite)
* Apr 28 - Astronomy Day
* Apr 28 - Asteroid 990 Yerkes Closest Approach To Earth (2.121 AU)
* Apr 29 - Cassini, Orbital Trim Maneuver #319 (OTM-319)
* Apr 29 - Asteroid 2008 UC202 Near-Earth Flyby (0.026 AU)
* Apr 30 - Asteroid 1388 Aphrodite Closest Approach To Earth (2.013 AU)
* Apr 30 - Asteroid 6984 Lewiscarroll Closest Approach To Earth (3.360 AU)
* Apr 30 - Carl Friedrich Gauss' 235th Birthday (1777)
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