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No. 94 - Cruise Phase

No. 94 - Cruise Phase

Report for Period 19 January to 15 February 2008Rosetta is continuing its 4th orbit around the Sun as part of its interplanetary journey. Thespacecraft distance from the Sun will now increase to reach a maximum of ca. 2.26 AU in December 2008.

Activities had a relatively low profile during the reporting period and performance of the mission has been nominal. Support was provided by NASA DSN stations when ESA New Norcia station was down for maintenance.

DOY Date Pass Main Activity
021 21/01/08 NNO 1424 Monitoring
024 24/01/08 NNO 1427 Monitoring
031 31/01/08 DSS-24 1434 Monitoring
037 06/02/08 DSS-34 1440 Data downlink
042 11/02/08 NNO 1445 Monitor. Uplink OSIRIS OBSM files
043 12/02/08 NNO 1446 OSIRIS OBSM activity
044 13/02/08 NNO 1447 OSIRIS Test 1
045 14/02/08 NNO 1448 OSIRIS Test 2
046 15/02/08 NNO 1449 Monitoring

At the end of the reporting period (DoY 046) Rosetta was at 56.53 million km from Earth (0.37 AU) and the one-way signal travel time was 188 seconds. The distance to the Sun was 168.97 million km (1.129 AU).

Spacecraft

During the reporting period a major OBSM activity was conducted on the OSIRIS instrument

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 was activated between DoY 043 and 045 to perform a major SW update and the subsequent functional tests.

ROSINA
Instrument was kept ON (RTOF in stand-by) as part of an out-gassing attempt till DoY 031/2008. The instrument is currently 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 248/2007 the accumulation settings are configured for active cruise mode.

Future Milestones

The cruise phase continues towards asteroid Steins that will be encountered early September 2008. During the next weeks Rosetta will complete the Steins observation campaign and start the reconfiguration of the various spacecraft subsystems for intermediate Sun distances. The reconfiguration will be completed in March before the entry in Near Sun Hibernation Mode. The second leg of the post-Earth Swing-by trajectory correction is planned for 21 February 2008.

Last Update: 1 September 2019
29-Oct-2020 17:54 UT

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