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02 July 2003

ISS On-Orbit Status 1 Jul 2003

Part 3 of 3

Flight Attitude:

LVLH -YVV (local vertical/local horizontal = "earth-fixed": z-axis in
local vertical, -y-axis in velocity vector [yaw: -10 deg, pitch: -9.3
deg, roll: 0 deg]), with CMG/TA (thruster assist) Momentum
Management.
Solar Beta angle:  -5.55 deg (magnitude decreasing).

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 (on string 2).
Ku-band is operating nominally.
Audio subsystem is operating nominally [IAC-1 (internal audio
controller #1) being analyzed after self-test error.  IAC-2 is
prime.]
Video subsystem operating nominally.
HCOR (high-rate communications outage recorder) is operating
nominally. 

Robotics:

SSRMS/Canadarm2 based at MBS PDGF #1 with Keep Alive (KA) power on
both strings.
MBS: KA power on both strings.
MT: latched and mated at WS4.
POA: KA power on both strings.
RWS (robotics workstations): Lab RWS is On (DCP connected); Cupola
RWS is Off.

ISS Orbit  (as of this morning, 7:08am EDT [= epoch]):

Mean altitude -- 387.4 km
Apogee -- 392.8 km
Perigee -- 382.1km
Period -- 92.30 min.
Inclination (to Equator) --  51.63 deg
Eccentricity -- 0.000789
Orbits per 24-hr. day -- 15.60
Solar Beta Angle -- -5.55 deg (magnitude decreasing)
Mean altitude loss in last 24 hours -- 80 m
Revolutions since FGB/Zarya launch (Nov. '98)  -- 26323
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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