- Press Release
- August 15, 2022
ISS On-Orbit Status 25 May 2002
All ISS systems continue to function nominally,
except as noted previously or below. Day 170 on orbit for Expedition
First of three crew rest days, with only a few necessary tasks
The station residents completed the regular weekly (Saturdays)
two-hour house cleaning.
CDR Yuri Onufrienko performed a test of the planned update/correction
of the SM BINS strapdown navigation/guidance system, taking star
sightings with the PUMA portable zoom viewfinder that he had
installed at SM window #6 on 5/20. The actual BINS correction
is scheduled for tomorrow. [PUMA is a monocular spyglass
connected via telemetry cable to the Wiener power laptop. To
take navigational fixes on stars, Onufrienko uses the "Star
Map" program on the laptop to enter coordinates for Eta Ursa
Major and Gamma Ursa Major. The BINS correction is then
executed by the PUMA software.]
The crew held an extensive UF-2 transfer conference with ground
specialists, and also tagged up with the Expedition 5 crew, via
S-band. Both sides had brought questions and issues to the
teleconference for discussion and clarification.
FE-2 Dan Bursch performed the daily routine tasks of autonomous Lab
payloads status checks, while FE-1 Carl Walz did routine maintenance
on the Russian SOSH life support system.
At 12:55 pm EDT, the crew supported a televised event for Russian PAO
by downlinking greetings and a message to the Third International
Conference/Exhibition on "Small Satellites: New Technologies and
Miniaturization — Areas of Effective Application in the 21.
Century", to take place May 27-31 in Korolyov near Moscow.
["Dear Friends and Colleagues! It is no coincidence that this
conference is being held in the lovely city of Korolyov, the
birthplace of the Sputnik, where under the direction of Sergey
Pavlovich Korolyov the famous Semyorka (R-7) was built to launch the
As requested by the crew during yesterday’s UF-2 EVA team conference,
several additional documents with background information were
uplinked overnight, such as an EMU consumables tracking cue card, a
pre-breathe hose schematic and an O2 flow connections overview.
The crew performed their daily physical exercise protocol. This
is getting increasingly important with approaching return to Earth’s
As part of CDR Onufrienko’s preventative health measures plan
preparatory to the return to Earth, Moscow reminded him to start
taking special food supplements: one tablet each of Dekamevit,
glutamic acid and ascorbic acid (Vitamin C) twice daily, after
breakfast and after lunch.
Onufrienko completed another session with the Diatomeya experiment,
taking photo and video film images of sea surface water blooms in
bioproductive regions of the world oceans. Targets today were in the
South Atlantic (Bengel upwelling, floating ice and icebergs near
Gough island, Falklands-Patagonia region), the Indian Ocean (Prince
Edward Island area), and the Pacific Ocean (coral reefs of Fiji).
MCC-Houston performed a remote checkout of the onboard Global
Positioning System (GPS) hardware. [The SIGI (space integrated
GPC/inertial navigation system) uses four commercial GPS antennas
mounted on the S0 (S-Zero) truss. The system, supported by four
RGAs (rate gyro assemblies), can determine station attitude, position
and velocity. There have been some glitches in the system’s
operations recently (which may be due to the current flight attitude
of XPOP, where not as many GPS satellites are "seen" as in
Science Update (Expedition Four — 24th):
The crew was congratulated by Lead Scientist Dr.
John Uri, on being ISS record holders, not only for duration, but
also for the most science accomplished.
Extra-Vehicular Activity Radiation Monitors (EVARM): In
GASMAP/Pulmonary Function in Flight (PuFF): Complete.
Renal (Kidney) Stone Experiment: Complete.
Interactions (NTXN): In progress.
Cellular Biotechnology Support Systems (CBOSS): Complete.
Physics of Colloids in Space (EXPPCS): Complete.
Space Acceleration Measurement System (SAMS): SAMS is currently
active and operating nominally. Attempting to capture signature of
AAA fan in ER#2. Attempted to capture two TVIS exercise sessions on
5/23 and 5/24 but TVIS signature acceleration signature has not been
evident due to physical location of sensors relative to TVIS
Microgravity Acceleration Measurement System (MAMS): &nbselliMAMS is
active and downlinking OSS quasi-steady data. HiRAP is turned off
while SAMS is collecting vibratory acceleration data.
Protein Crystal Growth-Single Locker Thermal Enclosure System
(PCG-STES): Has returned home.
Protein Crystal Growth-Enhanced Gaseous Nitrogen (PCG-EGN): In
progress. All is nominal crystals are growing.
Materials ISS Experiment (MISSE): Nominal and collecting
Educational Payload Operations (EPO): Complete.
Active Rack Isolation System – Isolation Characterization Experiment
(ARIS-ICE): This has been a big week for ARIS and ARIS-ICE, as
the POC (Payload Operations Center/Huntsville) has successfully run a
series of ARIS tests for the first time. This is very important
since it is the way ARIS will be operated once ARIS-ICE operations
end at UF-2. Next week there will be a few crew activities to
reconfigure ARIS for ICE control and install the ARIS GN2 umbilical
again, which will allow POC to finish up the last two weeks of
ARIS-ICE testing and prepare for on-going ARIS operations after
EarthKAM: Currently complete. All EarthKAM images are
available for public access on the EarthKAM data system at:
Zeolite Crystal Growth (ZCG): Complete.
ARCTIC Refrigerator/Freezer (ARCTIC): The ARCTIC unit is
Biomass Production System-Photosynthesis Experiment & System
Testing Operation (BPS-PESTO): The BPS is in good shape.
All chambers, except chamber 2, continue to function nominally.
The Brassica in chamber 2 are growing slower than normal.
Brassica can prosper in high humidity, but the chamber is also hot
and the plants may be reacting to this. The ground is hopeful
that the seeds planted by Dan Bursch from the first growth cycle will
develop along with the ground developed seeds. Plants in chamber 4
have not germinated yet, but they should sprout very soon. The CO2
cylinder change-out also ensures sufficient CO2 is available to the
plants for the remainder of the mission..
Commercial Protein Crystal Growth-High Density (CPCG-H): CPCG-H
Crystal Growth continues nominally. The science impact for the
Load Shed Power Outage event on day 139 is unknown at the present
time. This cannot be assessed until post flight. The CRIM-M memory
data will be analyzed for any temperature exceptions.
Commercial Generic Bioprocessing Apparatus (CGBA): The CGBA
experiment continues to function nominally. At this point, 32 of 48
antibiotic samples have been autonomously taken in the payload and
were confirmed via downlink. It is expected that the impact to
science from the load-shed event on day 139 will be minimal.
Crew Earth Observation (CEO): Today’s targets were: Angolan
Biomass Burning (of interest as ISS reached the Angolan coast
near Benguela: looking left of track and recording agricultural
burning in the interior plains. Both point sources of smoke and more
extensive palls are of interest), Industrialized Southeastern
Africa (of interest as ISS crossed the broad valley of the
Orange and Vaal Rivers: looking left of track toward the
Johannesburg-Pretoria agglomeration and recording any smog and smoke;
heating fires are now contributing smoke to the mix), Colima
Volcano, W. Mexico (Dynamic Events: The station passed along
the Mexican coast within sight of Colima volcano [left of track],
which has been producing clouds of incandescent ash, as well as lava
flows. Light is very low, so the crew may have been able to see a
glowing ash cloud; photographing one will be a challenge, so they
were asked to darken the area around the window and overexpose the
photo. Closer to the coast they likely saw a large smoke mass
from forest fires south of Puerto Vallarta), Patagonian
Glaciers (recognizing that ISS is still in XPOP attitude, crew
was asked to take a context photo of the South Patagonian ice field
[right of track]. These views will be compared with the fine ones
that they have taken earlier in the mission in order to map seasonal
changes in the extent of ice and snowpack).
CEO images can be viewed at the website http://eol.jsc.nasa.gov
<http://eol.jsc.nasa.gov/> ISS Orbit (as of this
morning, 7:28 am EDT):
Mean altitude — 388.0 km
Apogee — 392.5 km
Perigee — 383.5 km
Period — 92.3 min.
Inclination (to Equator) — 51.63 deg
Eccentricity — 0.0006692
Orbits per 24-hr. day — 15.60
Altitude decrease — 180 m (mean) in last 24 hours
Revolutions since FGB/Zarya launch (Nov. ’98) — 20048
Current Flight Attitude — XPOP (x-axis perpendicular to orbit
plane = “sun-fixed” [yaw: ~180 deg, pitch: -5.6 deg., roll: 0
For more on ISS orbit and naked-eye visibility dates/times,