Updates ISS UPDATES

[Orbinaut Pete]

A great view of TJ Creamer inside the Cupola:

Hi-res version.

And a great "fish-eye lens" view of the newly installed Cupola RWS:

Hi-res version.

---------- Post added at 08:51 PM ---------- Previous post was at 12:09 AM ----------

From ISS Daily Report for 15/05/2010:

Caldwell-Dyson installed the 5-ft ISA/VAJ (Internal Sampling Adapter/Vacuum Access Jumper) and used it for pressurizing and leak-checking PMA-2, leaving the equipment connected for PMA-2 leak checking after docking.

Conjunction Alert:
A potential conjunction with an unidentified piece of orbital debris (Object # 87761) approximately one hour after docking is under investigation by US & Russian teams but should have little impact on rendezvous plans. [Teams are considering a small, ISS-only, retrograde DAM (Debris Avoidance Maneuver) of 0.5 m/s delta-V (burn duration ~5 min 51 sec), which, if required, would be performed at approximately 1:08 PM GMT tomorrow (16/05) morning (retrograde being beneficial for Soyuz TMA-17/21S landing options next month and also preferable over posigrade for the Shuttle rendezvous). The nominal Shuttle maneuvers tomorrow will control the Shuttle trajectory along a nominal rendezvous profile whether the ISS DAM is performed or not. Should the DAM be performed, subsequent events including the RPM start window will shift earlier by 30 seconds due to a shift in sun lighting. Final GO/NO-GO for the DAM is at approximately 10:00 PM GMT tonight (15/05).

 

[Donamy]

Any pictures of the Cupola interior, showing the RWS, that isn't with a fish-eye lens ?

 

[Orbinaut Pete]

Any pictures of the Cupola interior, showing the RWS, that isn't with a fish-eye lens ?

'Fraid not, Don. But I'm expecting some to come down during STS-132, as the Cupola RWS is going to be used for all STS-132 robotics ops.

---------- Post added 16th May 2010 at 12:02 AM ---------- Previous post was 15th May 2010 at 11:07 PM ----------

It has been decided that no DAM will be performed.

 

[Donamy]

DAM ?

---------- Post added at 11:04 PM ---------- Previous post was at 11:03 PM ----------

never mind

 

[Orbinaut Pete]

From ISS Daily Report for 25/05/2010:

Deboost:
A one-burn deboost (altitude reduction) of ISS is scheduled tomorrow (26/05) at 6:25 AM GMT using Progress M-05M/37P midring thrusters. Planned burn duration: 9 min 51 sec; delta-V: -0.80 m/s; delta-H (mean): -1.4 km. Purpose of the deboost is to set up phasing for a Soyuz TMA-17/21S backup landing opportunity

 

[Star Voyager]

You mean there's going to be a retro-fire?

 

[tblaxland]

You mean there's going to be a retro-fire?

That is correct.

 

[Orbinaut Pete]

From ISS Daily Report 26/05/2010:

TJ accessed the currently inactive OGS (Oxygen Generation System) and disconnected the O2 (oxygen) outlet hose with its QD (Quick Disconnect) from the N2 (nitrogen) purge ORU (Orbit Replacable Unit). [OGA (Oxygen Generator Assembly) is unable to run due to a malfunctioning delta-pressure sensor in the water pump ORU. There is no spare sensor onboard but there is a spare pump ORU. O2 is good through Soyuz TMA-19/23S docking, and several sources exist for additional O2 if needed. Working “around” the sensor is also being investigated. Background: On 22/05, the OGA underwent a Fast Shutdown while in Standby Mode. A data dump confirmed that the differential pressure across the pump dropped from 6.9 psi to a value below 2 psi. Due to the low dP, the automatic FDIR (Fault Detection, Isolation & Recovery) commanded a Fast Shutdown.]

Sasha & Oleg continued their cargo transfer operations from MRM-1 to the ISS. [As of this morning, MRM-1 unloading was 70% complete.]

Deboost Update:
The deboost burn this morning by the small midring thrusters of Progress M-05M/37P was nominal. Burn duration: 9 min 51 sec. Delta-V: -2.6 ft/sec (-0.8 m/s); mean altitude decrease: -0.8 nm (-1,45 km). Total propellant consumption: 271 lbs. The purpose of the deboost (altitude reduction) was to set up orbital phasing for a Soyuz TMA-17/21S backup landing opportunity in Kazakhstan. [For the deboost maneuver, ISS attitude control authority was handed over to RS MCS (Motion Control System) and later returned to USOS Momentum Management.]

MRM-2 MPI Failure:
Yesterday’s C&W (Caution & Warning) testing by Kotov & Kornienko from the MRM-2 module established that the MPI (Multifunction Indicator Panel) on MRM-2 will no longer send commands, i.e., C&W commands cannot be sent from this unit. If needed, crewmembers will use the closest C&W panel in the SM for issuing commands. MRM-1 has the same type of panel installed; initialization of this unit is planned for next week.

 

[Orbinaut Pete]

Here’s a fantastic PMA-2 "tour" done by Tracy Caldwell-Dyson and Soichi Noguchi just after the hatch had been closed to Atlantis on STS-132. In the video, Tracy explains the procedures to reconfigure PMA-2 after the hatch has been closed to the Shuttle.

 

[Orbinaut Pete]

From ISS Daily Report for 01/06/2010:

On a Sad Note:
Pavel M. Vorobiev has passed away.
With his passing, the ISS Program has suffered the loss of one of its best engineer/managers. Pavel worked for RSC-Energia since 1957, hired by Sergei Korolev, the chief designer of the Soviet space program, and we all came to know, respect and love him during the pioneering Shuttle-Mir Program and the subsequent ISS development years. For Shuttle-Mir, Pavel was instrumental in developing new approaches to joint manifesting, cargo traffic scheduling, and cargo deliveries by the Shuttle to the Mir station,- unique techniques which later proved highly valuable for making the extremely complex ISS development a success. For ISS, Pavel again and again stood up as our foremost fighter for Crew Safety issues which he pushed for with unrelenting insistence, tenacity and unmistakable vocal power and eloquence.

-----

Rest In Peace to a great man.

---------- Post added 2nd Jun 2010 at 12:06 AM ---------- Previous post was 1st Jun 2010 at 11:39 PM ----------

A few good/notable images taken during STS-132.

This image was taken prior to STS-132, but it's just so beautiful that it deserves to be posted - Soyuz TMA-17 docked to FGB Nadir & Progress M-05M docked to DC-1 Nadir, as seen from the Cupola!

Hi-res version.

A great image of the JEM, taken from Atlantis.

Hi-res version.

The PDGF (Power & Date Grapple Fixture) that was retrieved from Atlantis's Payload Bay during EVA-3, seen inside the Quest Airlock.

Hi-res version.

The T2 COLBERT treadmill now in the Node 3 Forward 5 (NOD3F5) location. It was relocated from the Node 2 Deck 5 (NOD2D5) location prior to STS-132 (rotate image 90° anti-clockwise for correct module orientation).

Hi-res version.

Node 2 seen with 3 CQ (Crew Quarters) racks installed (the racks with the protruding volume). The Starboard (left of image) and Port (right of image) CQ racks were delivered on STS-126/ULF-2 in Nov. 2008, and the Overhead rack was delivered on STS-131/19A in Apr. 2010. In the coming weeks, the CQ rack currently located in the JPM Deck 3 (JPM1D3) location (see next image) will be relocated to the Node 2 Deck 5 (NOD2D5) location that was recently vacated by the T2 COLBERT treadmill (the NOD2D5 location is seen as an open rack bay in this image). This relocation will complete the circumferential arrangement of all 4 CQ racks in Node 2.

Hi-res version.

This image was taken prior to STS-132 as well, but it's useful a reference to the previous image. The CQ rack awaiting relocation to the NOD2D5 location, as mentioned in the previous image caption, is seen in its current JPM1D3 location. This CQ was delivered on STS-128/17A in Aug./Sep. 2009.

Hi-res version.

The Shuttle patch "wall", almost complete (only 2 patches remain to be added - STS-133 & STS-134 (and hopefully STS-135, if there's room))!

Hi-res version.

---------- Post added at 01:17 AM ---------- Previous post was at 12:06 AM ----------

Following the undocking of Soyuz TMA-17, Expedition 24 has now officially begun. The crew is as follows:

CDR: Aleksandr Skvortsov.

FE-2: Tracy Caldwell-Dyson.

FE-3: Mikhail Kornienko.

Soyuz TMA-19/23S will arrive on 17th June, bringing FE-4 Doug "Wheels" Wheelock (who is now on Twitter), FE-5 Fyodor Yurchikhin and FE-6 Shannon Walker.

Expedition 24 patch:

Hi-res version.

Full crew portrait:

Hi-res version.

Expedition 23/24 Press Kit (PDF, 11.5 MB).

 

[tblaxland]

The T2 COLBERT treadmill now in the Node 3 Forward 5 (NOD3F5) location. It was relocated from the Node 2 Deck 5 (NOD2D5) location prior to STS-132 (rotate image 90° anti-clockwise for correct module orientation).

That is taken from Node 1, looking to port, correct? The module seems a lot bigger than I expected from earlier images...

 

[Orbinaut Pete]

That is taken from Node 1, looking to port, correct? The module seems a lot bigger than I expected from earlier images...

That is correct. You are looking toward the Port side of the ISS (which is the Forward end of Node 3). Node 3's interior is exactly the same as Node 2 - so it would look even bigger if the WHC (Waste & Hygiene Compartment) "Kabin" wasn't sticking out so far into Node 3! The ARED (Advanced Resistive Exercise Device) also takes up quite a bit of space in Node 3 – part of it is visible toward the back of the image (the blue/yellow platform).

---------- Post added at 10:00 PM ---------- Previous post was at 03:48 PM ----------

Video (sorry, not available on YouTube): Expedition 23-24 Change of Command Ceremony.

---------- Post added 3rd Jun 2010 at 06:31 PM ---------- Previous post was 2nd Jun 2010 at 10:00 PM ----------

From ISS Daily Report for 03/06/2010:

Working in the new MRM-1, CDR Skvortsov activated and health-checked it’s MPI Multifunctional Panel which holds the C&W (Caution & Warning) displays. [Besides a “Current Station Time” clock with alarm & stop watch functions, the panel has indicators for Fire, Toxic Atmosphere (ATM) & Pressure Drop/Leak (∆P/∆t) events plus object selection & active control (ASK) buttons.]

Later, Skvortsov & FE-3 Kornienko checked out & tested the STTS comm. channels in MRM-1, supported by ground specialist tagup via S-band.

Reboost:
A one-burn reboost of ISS is scheduled for Saturday (05/06) morning at 3:20 AM GMT using the SM’s two main engines. Planned burn duration: 4 min 7 sec; delta-V: 4.3 m/s (14.1 ft/s). Expected mean altitude gain: 7.6 km (4.1 nmi). Purpose: set up orbital phasing for both Soyuz TMA-19/23S and Progress M-06M/38P launch/dock conditions.

 

[Orbinaut Pete]

From ISS On-Orbit Status Report for 04/06/2010:

FE-2 Caldwell-Dyson had ~1h15m set aside for troubleshooting the OGS (Oxygen Generator System) pump ORU (Orbit Replaceable Unit) whose pressure sensor has failed. Its low delta-P indication across the pump ORU had shut down the OGA (Oxygen Generation Assembly) on 22/05. Today’s procedure was to verify that the OGS Process Controller is not the cause of the sensor failure. [Steps included opening the OGS Rack doors to access the ORU, connect the Multimeter voltage/current measurement instrument to take voltage readings from the Controller to the sensor (should be ~15 VDC), then cleaning up and closing out the worksite. Tracy measured a sensor excitation voltage of 15.08 VDC, i.e., within nominal range and indicative of a healthy Process Controller. Additional troubleshooting will be scheduled in the near future to either replace the pump ORU or to operate the OGA without the dP sensor.]

In preparation of the planned installation of the PDGF (Power & Data Grapple Fixture) externally on the FGB (Functional Cargo Block) "Zarya" during US EVA-15 by Caldwell-Dyson & Wheelock (currently scheduled for 08/07), Mikhail unstowed the Russian-built PDGF adapter (rama = frame) from Progress M-05M/37P, transferred it to the DC-1 (Docking Compartment-1) "Pirs" module and installed a handrail on the adapter frame with six screw bolts and a screw sealant, Anaterm-1u (a special anaerobic compound). [The additional PDGF, the first on the RS (Russian Segment), will extend the "roving" range of the SSRMS which moves itself inch-worm like from PDGF to PDGF.]

Reboost:
A one-burn reboost of ISS is scheduled tomorrow morning at 3:20 AM GMT using the SM’s (Service Module's) two main engines. Planned burn duration: 4 min 7 sec; delta-V: 4.3 m/s (14.1 ft/s). Expected mean altitude gain: 7.6 km (4.1 nmi). Purpose: set up orbital phasing for both Soyuz TMA-19/23S and Progress M-06M/38P launch/dock conditions.

---------- Post added 5th Jun 2010 at 09:19 PM ---------- Previous post was 4th Jun 2010 at 10:51 PM ----------

From ISS On-Orbit Status Report for 05/06/2010:

Following up on the earlier detection of metal shavings in the new MRM-1, CDR Skvortsov was to perform an inspection of the MRM-1 hatch screen, taking photographs for subsequent downlink and cleaning the screen with the vacuum cleaner if shavings or foreign materials were found.

SM Reboost Update:
As per plan, a one-burn ISS reboost was conducted this morning at 3:20 AM GMT using the SM’s (Service Module's) two main engines. Performance was nominal. Burn duration: 4 min 7 sec; delta-V: 4.5 m/s/14.76 ft/s (predicted 4.36 m/s/14.30 ft/s). Mean altitude gain: 7.79 km/4.21 nmi (predicted 7.55 km/4.07 nmi). Purpose: set up orbital phasing for both Soyuz TMA-19/23S & Progress M-06M/38P launch/dock conditions.

Progress Reboosts:
Two more reboost maneuvers, one orbit apart, will be conducted by Progress M-05M/37P to fine-tune phasing for both Soyuz TMA-19/23S & Progress M-06M/38P launch conditions.
Reboost 1: TIG (Time of Ignition) = 11:55 PM GMT Mon. 07/06; burn duration: 9m 40s; delta-V: 0.8 m/s.
Reboost 2: TIG = 1:26 AM GMT Tue. 08/06; burn duration: 7m 15s; delta-V: 0.6 m/s.
Mean altitude increase after both burns: 2.55 km/1.38 nmi.

 

[Orbinaut Pete]

From ISS On-Orbit Status Report for 08/06/2010:

In the new MRM-1, with BITS2-12, VD-SU control mode and power supplies turned off, CDR Skvortsov uninstalled and removed electronics equipment (ABU SSVP, BUP-2, TA082/BNU) of the automatic control system used by MRM-1 during the approach & docking phase.

Reboosts Update:
Two single-burn reboost maneuvers were performed successfully this morning as scheduled, executed by the four Progress M-05M/37P mid-ring thrusters, one orbit apart, to fine-tune orbital phasing for both Soyuz TMA-19/23S & Progress M-06M/38P launch conditions.
. Reboost 1: TIG (Time of Ignition) – 12:10 AM GMT; burn duration: 9m 40s.
. Reboost 2: TIG – 1:45 AM GMT; burn duration: 7m 15s.
. Total delta-V: 1.42 m/s (4.66 ft/s) [predicted: 1.4 m/s (4.6 ft/s)].
. Mean altitude increase after both burns: 2.45 km (1.32 nmi) [predicted: 2.41 km (1.30 nmi)].

---------- Post added 9th Jun 2010 at 08:27 PM ---------- Previous post was 8th Jun 2010 at 10:58 PM ----------

From ISS On-Orbit Status Report for 09/06/2010:

CDR Skvortsov & FE-3 Kornienko continued their tear-down work in the new MRM-1, uninstalling & removing no longer needed electronic equipment. [Today the focus was on two boxes (TA082 & UDPK-24) of the BNU signal conditioning subsystem of the SBI onboard measurement system (discarded in Progress M-05M/37P), and the KL-108M-M transmitter of the Klest television system (temporarily stowed in MRM-1).]

Later in the day, Kornienko outfitted MRM-1 with an air duct (VD, vozduchovodiy), installing it with its adapter on the module’s BVN air heater fan.

FE-2 Caldwell-Dyson had about 2 hours set aside for troubleshooting the OGS (Oxygen Generator System) delta-pressure sensor, and her labors proved to be successful. [In Part 1 of the procedure, FE-2 removed the degraded recirculation pump ORU (Orbit Replaceable Unit) and installed a new pump ORU for an electrical verification of the new pressure sensor by MCC-Houston. Since the new sensor indicated a healthy recirculation loop pressure (i.e., negligible dP), Tracy completed the installation of the new ORU as per plan. If the recirculation loop pressure had remained bad with the new sensor, the original ORU would have been re-installed.]

 

[Orbinaut Pete]

From ISS On-Orbit Status Report for 10/06/2010:

All three crewmembers performed the mandatory 60 minute New Module Delta Emergency Procedure drill, intended to familiarize the station residents with changes associated with the arrival of a new module (MRM-1) to be conducted no later than 7-10 days after arrival of the new module.

IWIS Thruster Firing:
With the protective shutters of the Lab, JPM & Cupola windows closed earlier by Caldwell Dyson, the US SAs (Solar Arrays) maneuvered to SARJ (Solar Alpha Rotary Joint) park position and feathered, and the station in TEA (Torque Equilibrium Attitude), a ground-controlled SM thruster firing test performed the SA 4A DTF (Dedicated Thruster Firing) for IWIS (Internal Wireless Instrumentation System) structural dynamics measurements during the firings for the current ISS configuration. [To obtain quiescence for the Solar Arrays, the station went into free drift at 2:00 PM GMT for 200 sec, followed by the 5 thruster firings from 2:03 PM-2:16 PM GMT, followed by another 200 sec of free drift. Attitude control authority returned to US Momentum Management at 2:55 PM GMT after ISS had maneuvered back to duty attitude. The goal of these periodic DTOs (Detailed Test Objectives) is not to excite the Arrays by direct plume impingement like in tests in the past but to excite the Arrays from their base via mechanical loads. The on-orbit data will be utilized to correlate math models utilized by structures & mechanism specialists.]

---------- Post added 11th Jun 2010 at 09:39 PM ---------- Previous post was 10th Jun 2010 at 10:15 PM ----------

From ISS On-Orbit Status Report for 11/06/2010:

FE-2 Caldwell-Dyson supported ground-commanded troubleshooting of the OGS (Oxygen Generation System) by double-checking & photographing the electrical connections (W308-P23, W310-P24) of the newly installed OGS Pump ORU (Orbit Replacement Unit). [After the Pump R&R on 09/06, the Pump yesterday failed to spin up upon activation. Tracy’s inspection today was to rule out the Pump connectors as culprits. The OGA (Oxygen Generation Assembly) is currently not working].

 

[Orbinaut Pete]

From ISS On-Orbit Status Report for 12/06/2010:

Elektron Failure:
The Russian Elektron O2 (oxygen) generator failed unexpectedly last night at 9:44 PM GMT (under investigation). With a current ppO2 (partial pressure O2) of 159.75 mmHg, nominal crew metabolic rates (1.77 mmHg/day ppO2 decay for 3 persons) and ISS volume of 820 cubic meter (28,959 cubic feet), ppO2 would be at 148.9 mmHg at Soyuz TMA-19/23S hatch opening (minimum flight rule limit = 146 mmHg). After Soyuz TMA-19/23S hatch opening, the 146 mmHg limit would be reached after another ~19 hours (18/06 @ 9:00 PM GMT). Besides stored oxygen, there is also a large supply of SFOG (Solid Fuel Oxygen Generator) "candles" on board (Russian: TGK).

---------- Post added 13th Jun 2010 at 09:51 PM ---------- Previous post was 12th Jun 2010 at 09:53 PM ----------

From ISS On-Orbit Status Report for 13/06/2010:

In Node 3, FE-2 Caldwell-Dyson prepared the OGS (Oxygen Generator System) in the ARS (Atmosphere Revitalization System) rack for tomorrow’s planned R&R (Removal & Replacement) of the recirculation pump ORU (Orbit Replacement Unit), opening the ARS's right access door to allow for 24 hour thermal equalization, and disconnecting the O2 (oxygen) outlet hose from the N2 (nitrogen) purge ORU. [The decision has been made to re-install the original (degraded) pump in the OGS since the temporary replacement of the pump with a spare did not fix the OGS problem.]

Elektron Update:
After its overnight failure on 11-12/06, the Russian Elektron oxygen generator was successfully reactivated by TsUP-Moscow and the crew yesterday morning and restored to service.

 

[Orbinaut Pete]

Here's the Expedition 24 crew poster from collectSPACE.

---------- Post added 15th Jun 2010 at 07:06 PM ---------- Previous post was 14th Jun 2010 at 10:52 PM ----------

From ISS On-Orbit Status Report for 15/06/2010:

FE-3 Mikhail Kornienko had 2.5 hours set aside to continue cargo removal & transfers from the new MRM-1. [This involved removing interior panels (302, 304, 306, 102, 104, 107), unscrewing tie-down bolts, cutting cargo straps, detaching storage frames and retrieving 7 Russian & 9 US cargo bags from the frames for stowage in MRM-1 or handover to Caldwell-Dyson for stowage in the USOS (US Segment).]

OGS Pump ORU Update:
The R&R of the OGS (Oxygen Generation System) water recirculation pump in the ARS (Atmosphere Revitalisation System) rack reported yesterday had to be deferred since the necessary equalization of cabin temperature with the OGS temperature had not been accomplished. The R&R has been re-scheduled for tomorrow.

Elektron Shutdown Update:
The automatic shutdown of the Russian Elektron O2 generator on 11/06 evening was commanded by the controlling software due to a high temperature reading from the KOB-1 internal thermal control loop. After TsUP-Moscow switched the Elektron to KOB-2, the system returned to nominal function in 32 Amp mode.

Vozdukh Test Update:
For today and tomorrow, the Vozdukh CO2 (carbon dioxide) scrubber is being assessed by ground specialists for its efficiency in removing CO2 from the ISS atmosphere. The US CDRA (Carbon Dioxide Removal Assembly) will remain deactivated for the duration of the test and will be reactivated either tomorrow (16/06) or if CO2 levels reach flight rule limits or the crew reports symptoms.

---------- Post added at 11:15 PM ---------- Previous post was at 07:06 PM ----------

Here's Expedition 24 FE-4 Shannon Walker's Blog.

---------- Post added 16th Jun 2010 at 09:04 PM ---------- Previous post was 15th Jun 2010 at 11:15 PM ----------

From ISS On-Orbit Status Report for 16/06/2010:

FE-2 Tracy Caldwell-Dyson successfully re-installed the old OGA (Oxygen Generation Assembly) water recirculation pump ORU (Orbital Replacement Unit) in the ARS (Atmosphere Revitalisation System) rack. [OGA will be activated on Friday (18/06). Since the dP (delta-Pressure) sensor remains failed, ground teams are working to ensure that all software inhibits are in place to operate with sensor inhibited.]

Spending several hours in the new MRM-1, FE-3 Mikhail Kornienko continued tearing down no longer needed electronic equipment, today uninstalling & removing two Power Switching Units (BSK-1V, BSK-5B), a BSK-5B switch for the high-gain antenna, and a KSR Matching Resistor Switching Unit. Also planned was the removal of two SNT-50 boxes with their cables, but this task was deferred to a later date. [The removed equipment was required only for the flight, approach & docking phases of MRM-1. With the module now permanently linked to ISS at the FGB Nadir port, the equipment can be recycled and the volume taken up by it in the module freed for other uses.]

Oxygen Supplies Update:
Without OGA but with Elektron running, there is enough O2 (Oxygen) in the cabin atmosphere of the ISS to support a six-person crew until late next week. There are sufficient quantities on board to support the full crew through September before reaching the "reserve" line without resupply. With the arrival of Progress M-06M/38P, an additional month would be gained.

Vozdukh Capacity Test Update:
While ISS has a three-person crew, engineers are using the opportunity to test the Vozdukh CO2 (Carbon Dioxide) removal system by not operating the US CDRA (Carbon Dioxide Removal Assembly). After almost 72 hours without CDRA, CO2 level is at 5.5 mm Hg as measured by the dependable MCA (Major Constituent Analyzer). The crew has experienced no symptoms. CDRA will be activated again this afternoon to drive CO2 levels down again prior to tomorrow's docking.

 

[Orbinaut Pete]

From ISS On-Orbit Status Report for 17/06/2010:

Conjunction Advisory:
MCC-H flight controllers are currently monitoring four conjunctions with four different objects:
. Object 36444 (Cosmos 2251), TCA (Time of Closest Approach) = Friday 18/06 @ 6:19 PM GMT.
. Object 14277 (SL-12 R/B Aux Motor), TCA = Sunday 20/06 @ 8:11 AM GMT.
. Object 33141 (Cosmos 2421 Debris), TCA = Sunday 20/06 @ 11:05 AM GMT.
. Object 31004 (Fengyun 1c Debris), TCA = Sunday 20/06 @ 12:52 PM GMT.
All conjunctions will be re-evaluated tomorrow morning as soon as perturbations to the ISS's orbit from the Soyuz TMA-19/23S docking activities have been tracked out. If a DAM (Debris Avoidance Maneuver) is necessary for any of these objects, it would be performed using Progress M-05M/37P (docked at DC-1 "Pirs" Nadir) mid-ring thrusters. The effects of such a maneuver on the other conjunctions will be analyzed as necessary, with appropriate action taken.

 

[Orbinaut Pete]

From ISS On-Orbit Status Report for 18/06/2010:

Conjunction Update:
For the remaining three different objects, conjunction data was updated this morning taking into account the small ISS orbit perturbations resulting from last night’s Soyuz TMA-19/23S docking:
. Object 14277 (SL-12 R/B Aux Motor), TCA (Time of Closest Approach) = Sunday 20/06 @ 8:11 AM GMT.
. Object 33141 (Cosmos 2421 Debris), TCA = Sunday 20/06 @ 11:05 AM GMT.
. Object 31004 (Fengyun 1C Debris), TCA = Sunday 20/06 @ 12:52 PM GMT.

If a DAM is required for any of these objects, it would be performed using Progress M-05M/37P (docked at DC-1 "Pirs" Nadir) mid-ring thrusters. The effects of such a maneuver on the other conjunctions are being analyzed as necessary, with appropriate action taken.

Based on the first TCA (Object 14277), three preliminary maneuver options are under evaluation for early morning on Sunday 20/06:
. Option 1: TIG (Time of IGnition) = 5:55 AM GMT.
. Option 2: TIG = 5:36 AM GMT.
. Option 3: TIG = 6:06 AM GMT.

Decision timeline for Object 14277:
. PC (Probability of Collision) becoming valid = Saturday 19/06 @ 2:12 AM GMT.
. Go/No-Go for command sequence development by TsUP-Moscow (cyclogram) = Saturday 19/06 @ 8:42 AM GMT.
. DAM = Sunday 20/06 @ 5:55 AM GMT.
. TCA = Sunday 20/06 @ 8:11 AM GMT.

Maneuver data:
. Burn duration = 369 sec.
. Delta-V = 0.5 m/s.

---------- Post added 19th Jun 2010 at 09:27 PM ---------- Previous post was 18th Jun 2010 at 09:41 PM ----------

From ISS On-Orbit Status Report for 19/06/2010:

In COL (Columbus Orbiting Laboratory), FE-2 Tracy Caldwell-Dyson worked on the MARES (Muscle Atrophy Resistive Exercise System) Rack, going over the rack to confirm the presence and proper installation of a number of bolts at various places. [After return to Earth of STS-131/19A, a number of loose MARES launch lock bolts were found in the Leonardo MPLM. Tracy’s activity today was to verify all bolts currently installed in the rack, which should also ensure that there are no more loose bolts in the Leonardo MPLM/PMM as it is readied for its next launch.]

CDR Alexander Skvortsov completed the routine task of shooting two photos of the docking cone of the passive docking assembly (ASP-B) of the SM (Service Module) Aft port occupied by the Soyuz TMA-19/23S, a standard practice after Russian dockings. These images are used to refine current understanding of docking conditions. Skvortsov subsequently downlinked the pictures via OCA assets. [The objective is to take photo imagery of the scratch or scuff marks left by the head of the docking probe on the internal surface of the drogue (docking cone/ASP), now rotated out of the passageway. Before shooting the picture, the cosmonaut highlights the scuffmark with a marker and writes the date next to it. As other crewmembers before him, Alex used the Nikon D2X digital still camera to take two pictures with the hatch partially closed.]

Conjunction Update:
Flight controllers are continuing to monitor the three different objects:
. Object 14277 (SL-12 R/B Aux Motor), TCA (Time of Closest Approach) = Sunday 20/06 @ 8:11 AM GMT.
. Object 33141 (Cosmos 2421 Debris), TCA = Sunday 20/06 @ 11:05 AM GMT.
. Object 31004 (Fengyun 1C Debris), TCA = Sunday 20/06 @ 12:52 AM GMT.
As of this morning, the PC (Probability of Collision) for all objects was "Green", i.e., zero or negligible.

 

[Orbinaut Pete]

From ISS On-Orbit Status Report for 20/06/2010:

Conjunction Advisory:
Flight controllers have been notified of a new conjunction (Object 81875, Unknown) with a TCA (Time of Closest Approach) today at 6:38 PM GMT. This late notification conjunction is currently an unofficial “red threshold” violation. A DAM (Debris Avoidance Maneuver) cannot be planned in the time remaining, so the only option, if required, is to put the ISS crew in their respective Soyuz vehicles.

NOTE: At the time of posting, the TCA for this object had already occurred. Thus, the outcome of this conjunction is currently unknown.