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No. 163 - Quadrature Operations

No. 163 - Quadrature Operations

Report for Period 21 December to 27 December 2008Nominal operations were conducted during the reporting period. The spacecraft is currently in quadrature phase, when the Sun-Spacecraft-Earth angle is between 75° and 95°.

VIRTIS continues to be operated in the visual channels only. Radio Science Investigation (RSI) occultation measurements were taken during five ground station passes in the reporting period.

The table below shows a chronology of the main activities:

MET (Day) Date DOY Main Activity
1139 21/12/08 356

Communications pass over Cebreros.
RSI occultation measurements pass over New Norcia

1140 22/12/08 357

Skipped communications pass over Cebreros

1141 23/12/08 358

Communications pass over Cebreros.
RSI occultation measurements pass over New Norcia

1142 24/12/08 359

Skipped communications pass over Cebreros

1143 25/12/08 360

Communications pass over Cebreros.
RSI occultation measurements pass over New Norcia

1144 26/12/08 361

Communications pass over Cebreros.
RSI occultation measurements pass over NASA DSN

1145 27/12/08 362

Communications pass over Cebreros.
RSI occultation measurements pass over New Norcia



Payload Activities

ASPERA
The instrument was regularly operated as part of the routine plan.

MAG
The instrument was regularly operated as part of the routine plan.

PFS
The instrument was not operated during the reporting period.

SPICAV
The instrument was regularly operated as part of the routine plan.

VeRA
RSI occultation measurements were taken during the reporting period on DOY 356, 358, 360 and 362 with the New Norcia ground station, and on DOY 361 with the NASA DSN.

VIRTIS
The instrument was regularly operated as part of the routine plan.
VIRTIS is operated in the visual channels only.

VMC
The instrument was regularly operated as part of the routine plan.

Future Milestones

  • VIRTIS cooler test on 10 January 2009.
  • High gain antenna swap from HGA1 to HGA2 on 13 January 2009.
  • The quadrature phase will end on 25 January 2009.
  • Commissioning of the Reaction Control Subsystem B on 12 February 2009.
  • Battery Deep Discharge Test is planned for 22 April 2009.
  • Start of next (outbound) quadrature phase on 29 May 2009.

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This report is based on the ESOC mission operations report, MOR #163. Please see the copyright section of the legal disclaimer (bottom of this page) for terms of use.

Last Update: 1 September 2019
20-Sep-2020 18:15 UT

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