No. 112 - Near Sun Hibernation Mode
During the reporting period the performance of the deep space manoeuvre 4, which was executed on 18 March 2009, has been fully analysed confirming the good results of the preliminary analysis.
Mission operations have been conducted with support of the ESA New Norcia (NNO) ground station.
| DOY | Date | Pass | Main Activity |
| 082 | 23/03/08 | NNO 1852 |
Monitoring |
| 085 | 26/03/09 | NNO 1855 |
Switch to four reaction wheels |
| 090 | 31/03/09 | NNO 1860 |
Swap to star tracker B |
| 091 | 01/04/09 | NNO 1861 |
Monitoring NSHM pre-conditions |
| 092 | 02/04/09 | NNO 1862 |
NHSM entry |
| 093 | 03/04/09 | NNO 1863 |
NSHM verification |
At the end of the reporting period (DoY 093) Rosetta was at 383.78 million km from Earth (2.56 AU) and the one-way signal travel time was 1280 seconds. The distance to the Sun was 317.25 million km (2.12 AU).
Spacecraft
Payload
All instruments are now switched OFF, except for the Standard Radiation Environment Monitor (SREM) that continues to run in the background.
ALICE
The instrument is OFF.
CONSERT
The instrument is OFF.
COSIMA
The instrument is OFF.
GIADA
The instrument is OFF.
MIDAS
The instrument is OFF.
MIRO
The instrument is OFF.
OSIRIS
The instrument is OFF.
ROSINA
The instrument is OFF.
RPC
The instrument is OFF.
RSI
The instrument is muted.
VIRTIS
The instrument is OFF.
LANDER Philae
The instrument is OFF.
SREM
Since DoY 091/2009 the accumulation settings are configured for passive cruise mode.
Future Milestones
The current passive cruise phase will continue until beginning of September when the spacecraft will be reconfigured in active cruise mode in preparation of the Earth swing-by 3 phase.
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Legal disclaimer
This report is based on the ESOC mission operations report, WOR #112. Please see the copyright section of the legal disclaimer (bottom of this page) for terms of use.