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No. 19 - Cruise 1 Phase Continues

No. 19 - Cruise 1 Phase Continues

Report for week 25 June to 2 July 2004The reporting period covers the fourth week of Cruise 1, in which for the first time no test, maintenance or characterization activity was planned. The spacecraft is configured for quiet cruise and the payload is off.

After the reset of GSEP bias pointing to 60 degrees a different profile in the torque evolution of two of the reaction wheels was observed in the dumped telemetry of the 27 June pass. In order to collect more data an extra pass on 29 June was scheduled to have an additional telemetry dump. Investigations are on-going to explain the observed behaviour, which has in any case no observable effect on the overall dynamics of the spacecraft (attitude and trajectory).

Four New Norcia ground station passes were skipped, as planned, on 25, 26, 28 and 30 June.

The table below shows a chronology of the main activities in the reporting period:

Mission Day

Date

DOY

Main Activity

116

25/26.06.04

177/178

Skipped ground contact

117

26/27.06.04

178/179

Skipped ground contact

118

27/28.06.04

179/180

Monitoring Pass

119

28/29.06.04

180/181

Skipped ground contact

120

29/30.06.04

181/182

Monitoring Pass

121

30.06/01.07.04

182/183

Skipped ground contact

122

01/02.07.04

183/184

Monitoring pass; uplink weekly MTL

At the end of the last New Norcia pass in the reporting period (DOY 184) Rosetta was at 60.8 million kilometres from the Earth. The one-way signal travel time was 3 minutes 23 seconds.

Last Update: 1 September 2019
31-Oct-2020 08:33 UT

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