This Echo is READ ONLY !   NO Un-Authorized Messages Please!
 ~~~~~~~~~~~~~~~~~~~~~~~~   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1\28 ISS On-Orbit Status 28-01-2003
Part 2 of 2

U.S. and Russian contamination experts have finally agreed on a joint 
water venting protocol, now ready for signing by both sides. [It 
allows the U.S.  to use a six-day window after Progress 10P docking 
for nonpropulsive venting, without expending any maneuver propellants. 
No venting will be done when a Russian docking port is open. We also 
can vent nonpropulsively from +/-YVV/"Barbecue" attitude, when 
required at solar Beta angles larger than 60 degrees. Discussions are 
also getting underway between both sides on increasing condensate 
water collection on the Russian segment and its proper certification. 
Pending necessary improvements to the Russian SRV-K water processor 
system, after 10P, U.S. water processing by the Russian Elektron 
should also be resumed.]

Yesterday's SM/Kurs rendezvous test for the Progress 10P docking on 
2/4 was successful. The test involved a new procedure, which uses only 
one (#1) of the two Kurs antennas mounted at the tips of the two 
Service Module (SM) solar wings. [The second antenna, on wing #2, is 
operational but functions only intermittently. Antenna selection is 
done automatically by the Kurs avionics, and yesterday's test showed 
that the docking can be performed with only the #1 antenna, made 
possible by the current LVLH flight attitude which has the #1 solar 
wing always pointed to the approaching vehicle. In case of Kurs 
failure, the old manual TORU backup mode continues to be available.]

Launch of Progress 10P (M-247) is still set for Sunday, 2/2 (7:59am 
EST), with docking on 2/4 (9:48am). The two parts for the MSG 
(microgravity science glovebox) are on board the resupply ship.

Today's targets for the CEO (crew earth observations program) were
Patagonian Glaciers (glaciers that lie on the west side of the 
southern Andes are less well photographed due to greater cloudiness. 
Trying for Pacific-side glacier tongues in cloud holes under present 
relatively clear conditions. The handheld imagery on these two ice 
fields is now the best archive on the region that exists in terms of 
coverage and detail), Saharan dust outblow (Dynamic Event. Major dust 
pall is hundreds of miles wide, streaming west into the Atlantic. 
Looking right for the southern dust margin, and then ~2-3 min later 
looking left for the northern margin near the Moroccan coast. Wide 
views [mapping series] of the full extent of the phenomenon are 
requested), La Paz (looking right on the major western lip of the high 
desert plateau for this large city, which lies both on the high 
plateau and cascades down into a major canyon on the Andean flank), 
and Biomass burning, Australia (Dynamic Event. Look right to document 
the large smoke pall that has developed from the major fires in SW 
Australia. Obliques and slight overexposure help to capture the more 
subtle aerosol loadings (underexposure captures the denser, core areas 
of the dust mass).

CEO images can be viewed at the website http://eol.jsc.nasa.gov

U.S. and Russian Segment Status (as of 1:45pm EST).

Environmental Control and Life Support (ECLSS) and Thermal Control 
(TCS):  Elektron O2 generator is powered On (16 Amp mode). Vozdukh CO2 
scrubber is On. 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)
 -- 24.8; ppO2 (mmHg) -- 169.3; ppCO2 (mmHg) -- 2.5 (suspect).
SM Transfer Compartment: Pressure (mmHg) -- 751; temperature (deg C)
 -- 19.8.
FGB Cabin: Pressure (mmHg) -- 752; temperature (deg C) -- 21.7.
Node: Pressure (mmHg) -- 745.8; temperature (deg C) -- 22.9 (shell);
 ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
U.S. Lab: Pressure (mmHg) -- 748.05; temperature (deg C) -- 22.6;
 ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a;
Joint Airlock (Equip. Lock): Pressure (mmHg) -- 748.05; temperature
 (deg C) -- 22.0; shell heater temp (deg C) -- 22.1, ppO2 (mmHg) --
 165.4; ppCO2 (mmHg) -- 5.9.
PMA-1: Shell heater temp (deg C) -- 23.1
PMA-2: Shell heater temp (deg C) -- 17.7
(n/a = data not available)

Propulsion System (PS): Total propellant load available (SM + FGB +
Progress) -- 3669 kg (8089 lb) [as of 1/23/03]. (Capability: SM -- 870 
kg; FGB -- 6160 kg).

Electrical Power Systems (EPS):
Both P6 channels fully operational. Beta Gimbal Assembly (BGA) 2B
 and BGA 4B both in "blind" dual-angle mode (directed position).
SM batteries: Battery #7 is off line (failed); battery #2 is offline;
 all other batteries (6) are in "Full Charge" mode.
FGB batteries (3am): Battery #2 is offline; 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-1 MDM is prime; GNC-2 is Backup (new patches loaded on both).
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 (diagnostic
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 down (as of 11/14/02).
SM Central Computer (TsVM): 3 redundant lanes (of 3) operational.

Attitude Source:
3 CMGs on-line (CMG-1 failed).
State vector -- U.S. SIGI-1
Attitude -- U.S. SIGI-1
Angular rates -- U.S. RGA-1

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]), CMG/Thruster Assist Momentum Management).
Solar Beta Angle: 22.6 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.
Ku-band is operating nominally.
Audio subsystem operating nominally.
Video subsystem operating nominally.
HCOR (high-rate communications outage recorder) is operating
 nominally.

Robotics:
SSRMS/Canadarm2 based at MBS PDGF2 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, 9:42am EST [= epoch]):
Mean altitude -- 387.8 km
Apogee -- 392.5 km
Perigee -- 383.2 km
Period -- 92.31 min.
Inclination (to Equator) -- 51.63 deg
Eccentricity -- 0.0006821
Orbits per 24-hr. day -- 15.60
Altitude loss -- 250 m (mean) in last 24 hours
Solar Beta Angle -- 22.6 deg (magnitude decreasing)
Revolutions since FGB/Zarya launch (Nov. '98) -- 23922

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 -
================

---