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No. 135 - Conjunction Phase Operations

No. 135 - Conjunction Phase Operations

Report for Period 8 June to 14 June 2008The reporting period covered conjunction phase operations. During this phase, groundstation pass operations are reduced: no science activities are carried out, no solid state mass memory (SSMM) dumping takes place.

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

MET (Day) Date DOY Main Activity
943 08/06/08 160 No contact with the spacecraft
944 09/06/08 161 No contact with the spacecraft
945 10/06/08 162 No contact with the spacecraft
946 11/06/08 163 No contact with the spacecraft
947 12/06/08 164 No telemetry (TM) processed during the entire pass, due to signal noise at New Norcia (also from effects of Sun scintillation on a low bit rate signal)
948 13/06/08 165 Reduced conjunction commanding test was commanded. Some TM instability
949 14/06/08 166 Stable telemetry received 1:30 after acquisition of signal. All activities of the pass accomplished

At the end of the last Cebreros pass in the reporting period (DOY 166) Venus Express was orbiting Venus at 259.5 million km from the Earth. The one-way signal travel time was 865 seconds.

Payload Activities

ASPERA
The instrument was not operated during the conjunction phase.

MAG
The instrument was not operated during the conjunction phase.

PFS
The instrument was not operated during the conjunction phase.

SPICAV
The instrument was not operated during the conjunction phase.

VeRA
The instrument was not operated during the conjunction phase.

VIRTIS
The instrument was not operated during the conjunction phase.

VMC
The instrument was not operated during the conjunction phase.

Future Milestones

  • Conjunction phase exit to take place on 19 June 2008, DOY 171
  • SSMM reconfiguration to be performed on 20 June 2008
  • Beginning of pericenter lowering operation, scheduled on 13 July 2008
  • Organise an S-band carrier power test after solar conjunction

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Legal disclaimer
This report is based on the ESOC mission operations report, MOR #135. Please see the copyright section of the legal disclaimer (bottom of this page) for terms of use.

Last Update: 1 September 2019
10-Jul-2020 00:29 UT

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