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2\07 ISS On-Orbit Status 07-02-2003
Part 2 of 2

Planners are also looking at the possibility of scheduling an EVA for 
the current Expedition 6 crew during the remainder of their increment. 
Its objective would be to make the external station more robust, 
thereby reducing the possible need for a contingency two-man EVA 
later. One example would be the replacement of a failed RPCM (remote 
power controller module) on the MT (Mobile Transporter).

Today's targets for the CEO (crew earth observations program) were 
Calcutta, India (as ISS approached the many mouths of the Ganges from 
the southwest, the crew was to look carefully on the left side of the 
delta, about 60 miles inland for nadir views of this megacity), 
Johannesburg, South Africa (South Africa's industrial centers of 
Johannesburg and Pretoria are at nadir as ISS tracked northeastward 
this pass), Karachi, Pakistan (this Pakistani port city is on the 
coast northwest of the Indus River delta), Kuwait City, Kuwait 
(weather and lighting this pass were excellent for views of the 
Kuwaiti capital, just left of track), Patagonian Glaciers (weather 
conditions continued to improve over Patagonia, but illumination was 
falling off rapidly. ISS pass offered good nadir views of the smaller, 
less photographed, Northern Patagonian Ice Field. Crew was to use the 
long lenses to capture details of the glaciers under summer 
conditions, especially those on the northern and western flanks), High 
Central Andean Glaciers (after passing over Lima the ISS immediately 
crossed the crest of the Andes. Where cloudiness permitted, the crew 
was to try for context views of the small glaciers and ice fields in 
this portion of the mountains with either nadir or oblique views 
either side of track), Lima, Peru (ISS approached the Peruvian capital 
city on the coast from the southwest on this pass. Although diurnal 
cloudiness often obscures this target, ISS should have been early 
enough in the day to get a good nadir view), and Phoenix, AZ (good, 
views of this desert city lie just to the left of track.)

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 (32 Amp mode). Vozdukh CO2 
scrubber is On (auto mode). 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 Regeneration 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)
 -- 27.4; ppO2 (mmHg) -- 160.8; ppCO2 (mmHg) -- 2.3 (suspect).
SM Transfer Compartment: Pressure (mmHg) -- 751; temperature (deg C)
 -- 19.5.
FGB Cabin: Pressure (mmHg) -- 752; temperature (deg C) -- 21.3.
Node: Pressure (mmHg) -- 742.62; temperature (deg C) -- 22.2 (shell);
 ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a.
U.S. Lab: Pressure (mmHg) -- 744.92; temperature (deg C) -- 22.7;
 ppO2 (mmHg) -- n/a; ppCO2 (mmHg) -- n/a;
Joint Airlock (Equip. Lock): Pressure (mmHg) -- 744.92; temperature
 (deg C) -- 20.7; shell heater temp (deg C) -- 22.1, ppO2 (mmHg)
 -- 165.34; ppCO2 (mmHg) -- 4.87.
PMA-1: Shell heater temp (deg C) -- 22.0
PMA-2: Shell heater temp (deg C) -- 17.9
(n/a = data not available)

Propulsion System (PS): Total propellant load available [SM(82)
 + FGB(2898) + Progress(0)] -- 3718 kg (8197 lb) as of 1/30/03. 
 (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 "blind" dual-angle mode (directed position).
SM batteries: Battery #7 is off line (failed); all other batteries
 (7) are in "Partial Charge" mode.
FGB batteries: Battery #1 is off line; battery #3 is in "Cycle mode";
 all other batteries (4) are in "Partial Charge" mode.
Plasma Contactor Unit PCU-1 and PCU-2 both in Standby mode.

Command & Data Handling Systems:
C&C-2 MDM is prime, C&C-3 is back-up, and C&C-1 is in standby.
GNC-1 MDM is prime; GNC-2 is Backup.
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 out of the set (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 (GPS)
Attitude -- U.S. SIGI-1 (GPS)
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/TA (thruster assist) momentum management).
Solar Beta Angle: -17.0 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, but VTR1 is off.
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, 8:05am EST [= epoch]):
Mean altitude -- 386.3 km
Apogee -- 390.2 km
Perigee -- 382.4 km
Period -- 92.28 min.
Inclination (to Equator) -- 51.64 deg
Eccentricity -- 0.0005759
Orbits per 24-hr. day -- 15.60
Mean altitude loss in last 24 hours -- 150 m
Solar Beta Angle -- -17.0 deg (magnitude decreasing)
Revolutions since FGB/Zarya launch (Nov. '98) -- 24078

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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