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3\13 ISS On-Orbit Status 13-03-2003
Part 2 of 2

For the popular CEO (crew earth observations program), the daily 
targeting now includes several "cities at night" targets, as per crew 
request, since right now there are few daylight opportunities for the 
traditional sites.  Today's CEO targets were Las Vegas, Nevada (City 
at Night. High pressure in this area should have given the crew 
relatively clear view of "Lost Wages".  The city was slightly left of 
track. Las Vegas and Perth were the two best "Cities at Night" 
opportunities), Perth, Australia (City at Night. Perth, the city that 
turned its lights on at night for John Glenn during his Mercury flight 
should have been free of clouds. Perth was slightly left of track), 
Lower Amazon River Basin (crew was to look right of track for the 
massive Amazon delta. There were probably some clouds, but this area 
is seldom cloud-free. The Brazilian government is very interested in 
images of the delta. Of particular interest are the sediment plumes, 
direction and density; and the documentation of growth of the islands 
in the delta), Xianggang (Hong Kong), China (City at Night - This 
could have been the first image of Hong Kong at night in the team's 
database. The ISS orbit track should have taken the crew directly over 
the city), Tropical Cyclone Kalunde (Dynamic Event Site Tropical 
cyclone Kalunde is moving southwestward at 40 knots. Maximum sustained 
winds at 100 knots, gusting to 125 knots), Dhaka, Bangladesh (City at 
Night - Clouds should clear by the time of your pass.  This city is 
somewhat problematic to locate during the day, should be easier for 
the crew to see at night), Cape Town, South Africa (City at Night - 
Cape Town, at the very southern tip of Africa, should be at nice night 
target.  The city was to the left of the ground track), Patagonian 
Glaciers (the glaciers won't have been entirely cloud free, but the 
crew may have been able to see some of them between the clouds. 
Looking for highly detailed imagery of the glaciers as the season 
changes from spring to summer), and Riyadh, Saudi Arabia (City at 
Night - There were be clouds during the day but they should have 
burned off by night. This city may have been photographed at night 
before by ISS, but since this type of imagery is so unique, repeat 
images are desirable).  CEO images can be viewed at the websites

http://eol.jsc.nasa.gov and http://earthobservatory.nasa.gov

U.S. and Russian Segment Status (as of 1:22pm EST).

Environmental Control and Life Support (ECLSS) and Thermal Control 
(TCS):  Elektron O2 generator is powered On (24 Amp mode). Vozdukh CO2 
scrubber is On (Manual mode 5). U.S. CDRA CO2 scrubber is Off. TCCS 
(trace contaminant control subsystem) is operating. MCA (major 
constituents analyzer) is operating. BMP Harmful Impurities unit: 
Absorbent bed #1 in Purify mode; bed #2 in Purify mode. RS air 
conditioner SKV-1 is On; SKV-2 is Off.

SM Working Compartment: Pressure (mmHg) -- 753; temperature (deg C)
 -- 25.7; ppO2 (mmHg) -- 184.0; ppCO2 (mmHg) -- 2.5 (suspect).
SM Transfer Compartment: Pressure (mmHg) -- 751; temperature (deg C)
 -- 20.3.
FGB Cabin: Pressure (mmHg) -- 752; temperature (deg C) -- 20.0.
Node: Pressure (mmHg) -- 743.25; temperature (deg C) -- 22.8 (shell);
 ppO2 (mmHg) -- 171.0; ppCO2 (mmHg) -- 4.4.
U.S. Lab: Pressure (mmHg) -- 744.61; temperature (deg C) -- 21.8;
 ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a;
Joint Airlock (Equip. Lock): Pressure (mmHg) -- 744.72; temperature
 (deg C) -- 20.9; shell heater temp (deg C) -- 22.0, ppO2 (mmHg)
 -- n/a; ppCO2 (mmHg) -- n/a.
PMA-1: Shell heater temp (deg C) -- 23.0
PMA-2: Shell heater temp (deg C) -- 20.5
(n/a = data not available)

Propulsion System (PS):
Total propellant load available [SM(820) + FGB(2746) + Progress(576)] 
 -- 4142 kg (9132 lb) as of 3/6/03. (Capability: SM -- 860 kg; FGB -- 
 6120 kg).

Electrical Power Systems (EPS):
Both P6 channels fully operational. Beta Gimbal Assembly (BGA) 2B
 and 4B both in dual-angle directed position (eclipse drag
 reduction configuration, "night glider").
SM batteries: All batteries (8) are in "Partial Charge" mode.
FGB batteries: Batteries #2 is off line; all other batteries (5)
 are in "Partial Charge" mode.
Plasma Contactor Unit PCU-1 and PCU-2 both in Standby mode.

Command & Data Handling Systems:
C&C-1 MDM is prime, C&C-2 is back-up, and C&C-3 is in standby.
GNC-2 MDM is prime; GNC-1 is Backup.
INT-1 is operating; INT-2 is Off.
EXT-1 is On (primary), EXT-2 is Off.
LA-1, LA-2 and LA-3 MDMs are all operating.
PL-2 MDM is On (primary); PL-1 MDM is Off
APS-1 (automated payload switch #1) and APS-2 are both On.
SM Terminal Computer (TVM): 2 redundant lanes (of 3) operational.
 Lane 1 is out of the set (as of 11/14/02).
SM Central Computer (TsVM): 2 redundant lanes (of 3) operational.
 Lane 1 is out of the set (as of 3/2/03).

Attitude Control Systems:
3 CMGs on-line (CMG-1 failed).
State vector source -- U.S. SIGI-1 (GPS)
Attitude source -- U.S. SIGI-1 (GPS)
Angular rate source -- Russian.

Flight Attitude:
LVLH TEA (local vertical/local horizontal = "earth-fixed": z-axis in 
local vertical, x-axis in velocity vector [yaw: -10 deg, pitch: -9.1 
deg, roll: 0 deg]), with CMG/ TA (thruster assist) Momentum 
Management).  Solar Beta Angle: 22.7 deg (magnitude increasing).

Communications & Tracking Systems:
FGB MDM-1 is powered Off; FGB MDM-2 is operational.
All other Russian communications & tracking systems are nominal.
S-band is operating nominally.
Ku-band is operating nominally.
Audio subsystem operating nominally.
Video subsystem operating nominally (VTR1 is operable again).
HCOR (high-rate communications outage recorder) is operating
 nominally.

Robotics:
SSRMS/Canadarm2 based at Lab PDGF with Keep Alive (KA) power on
 both strings.
MBS: KA power on both strings.
MT: latched at WS4, with KA power.
POA: KA power on both strings.
RWS (robotics workstations): Lab RWS is Off; Cupola RWS is Off.

ISS Orbit (as of this morning, 6:42am EST [= epoch]):
Mean altitude -- 390.8 km
Apogee -- 396.9 km
Perigee -- 384.8 km
Period -- 92.37 min.
Inclination (to Equator) -- 51.63 deg
Eccentricity -- 0.000895
Orbits per 24-hr. day -- 15.59
Solar Beta Angle: 22.7 deg (magnitude increasing)
Mean altitude gain in last 24 hours -- 2140 m
Revolutions since FGB/Zarya launch (Nov. '98) -- 24607

For more on ISS orbit and worldwide naked-eye visibility dates/times, 
see http://www.hq.nasa.gov/osf/station/viewing/issvis.html

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