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| subject: | 4\21 Pt 3 ISS On Orbit Status 21-04-2003 |
This Echo is READ ONLY ! NO Un-Authorized Messages Please! ~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 22 April 2003 ISS On-Orbit Status 21 Apr 2003 Part 3 of 3 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 -- RGA-2 Flight Attitude: XPOP (x-axis perpendicular to orbit plane = 'sun-fixed' [yaw: 0.5 deg, pitch: -8.8 deg., roll: 0 deg]), with CMG TA (thruster assist) Momentum Management. Solar Beta Angle: -39.5 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; VTR2 in troubleshooting). 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, 6:43am EDT [= epoch]): Mean altitude 392.4 km Apogee -- 396.8 km Perigee -- 388.0 km Period -- 92.40 min. Inclination (to Equator) -- 51.63 deg Eccentricity -- 0.0006475 Orbits per 24-hr. day -- 15.58 Solar Beta Angle: -39.5 deg (magnitude increasing) Mean altitude loss in last 24 hours -- 100 m Revolutions since FGB/Zarya launch (Nov. '98) -- 25215 For more on ISS orbit and worldwide naked-eye visibility dates/times, see http://www.hq.nasa.gov/osf/station/viewing/issvis.html - END OF FILE - ========== @Message posted automagically by IMTHINGS POST 1.30 ---* Origin: SpaceBase(tm) Pt 1 -14.4- Van BC Canada 604-473-9358 (1:153/719.1) SEEN-BY: 633/267 270 @PATH: 153/719 715 7715 140/1 106/2000 633/267 |
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