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No. 100 - Active Payload Check-out 8

No. 100 - Active Payload Check-out 8

Report for Period 5 July to 18 July 2008During the reporting period the first two weeks of the active payload check-out 8 were executed, as well as the attitude and orbit control system (AOCS) check-out 8.

Operations have been nominal and the payload activities will continue according to the plan for the next two weeks.

A total of ten New Norcia (NNO) passes were taken during this period:

DOY Date Pass Main Activity
189 07/07/08 NNO 1592 AOCS check-out 8
Data downlink for passive payload check-out (DoY 187-188)
190 08/07/08 NNO 1593 AOCS check-out 8
191 09/07/08 NNO 1594 Payload check-out 8:
192 10/07/08 NNO 1595 Payload check-out 8:
Lander, COSIMA
193 11/07/08 NNO 1596 Payload check-out 8:
196 14/07/08 NNO 1599 Payload check-out 8:
197 15/07/08 NNO 1600 Payload check-out 8:
198 16/07/08 NNO 1601 Payload check-out 8:
199 17/07/08 NNO 1602 Payload check-out 8:
Lander, MIDAS
200 18/07/08 NNO 1603 Payload check-out 8:

At the end of the reporting period (DoY 200) Rosetta was at 251.7 million km from Earth (1.68 AU) and the one-way signal travel time was 840 seconds. The distance to the Sun was 295.88 million km (1.977 AU).


Several instruments have been activated during the reporting period as planned for the payload check-out 8 activities. The highlights of the major events linked to these operations are given below for the different instruments:

The instrument was activated twice as part of the passive check-out (DoY 187) and later (DoY 193) for an acquisition run.

The instrument was activated twice as part of the passive check-out (DoY 187) and later (DoY 200) for the interference test to be executed in the next reporting period.

COSIMA was activated once in the reporting period (DoY 191) for a full software uplink (v12) and testing of the high telemetry bit rate mode.

The instrument was activated twice as part of the passive check-out (DoY 193) and for dedicated tests for Steins operations and context file recovery (DoY 188-195).

The instrument was activated twice as part of the passive check-out (DoY 187) and later (DoY 197) for a minor software uplink.

The instrument was activated twice as part of the passive check-out (DoY 188) and later (DoY 197) for a dedicated test.

The instrument software (four new User Defined Procedures) was updated and flight results show nominal behaviour with respect to the switch ON.

The instrument was activated on DoY 196 for a complete software update (v7.0) of the redundant side.

The instrument was activated three times (DoY 193, 195 and 197) for the Ion Electron Sensor (IES) software updates and dedicated tests.

The instrument is muted.

The instrument is OFF.

The instrument was activated on DoY 191 for an extensive test session lasting several days. Most of the subsystems and instruments are being activated and tested as planned, including the uplink of the command and data management system (CDMS) software v6.98.

Since DoY 184/2008 the accumulation settings are configured for active cruise mode.

Future Milestones

The cruise phase continues towards asteroid Steins which will be encountered early September 2008. The active payload check-out 8 will last two more weeks. This will be followed by the optical navigation campaign required for the asteroid fly-by. This campaign will include imaging by the navigation camera (NAVCAM) and by the OSIRIS instrument.

Legal disclaimer
This report is based on the ESOC mission operations report, WOR #100. Please see the copyright section of the legal disclaimer (bottom of this page) for terms of use.

Last Update: 1 September 2019
30-May-2024 13:31 UT

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