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No. 149 - Preparations for first rendezvous manoeuvre

No. 149 - Preparations for first rendezvous manoeuvre

Report for the period 18 December 2010 to 16 January 2011This report covers 30 days of Rosetta mission operations. The spacecraft has been fully configured for the execution of the first rendezvous manoeuvre, planned to start on 17 January.

During the reporting period, mission operations were conducted using the ESA New Norcia (NNO) ground station and the DSS-15 (Goldstone, 34 metres), DSS-24 (Goldstone, 34 metres), DSS-25 (Goldstone, 34 metres), DSS-26 (Goldstone, 34 metres), DSS-43 (Canberra, 70 metres), DSS-55 (Madrid, 34 metres) and DSS-65 (Madrid, 34 metres) NASA Deep Space Network (DSN) antennas.

Main activities during reporting period
DoY Date Pass Activity
352 18-Dec-2010 DSS-65 2488 Monitor
353 19-Dec-2010 DSS-25 2490 Monitor
354 20-Dec-2010 NNO 2491 Monitor
355 21-Dec-2010 NNO 2492 Monitor
356 22-Dec-2010 NNO 2493 Monitor
357 23-Dec-2010 DSS-65 2494 Monitor
361 27-Dec-2010 NNO 2498 Monitor
362 28-Dec-2010 DSS-26 2499
NNO 2499
Monitor
363 29-Dec-2010 DSS-26 2500
NNO 2500
Monitor
364 30-Dec-2010 NNO 2501 Monitor
001 1-Jan-2011 DSS-43 2503 Monitor
003 3-Jan-2011 NNO 2505 Monitor
004 4-Jan-2011 DSS-26 2506 Monitor
005 5-Jan-2011 DSS-15 2507
NNO 2507
Monitor
006 6-Jan-2011 NNO 2508 Slew to first rendezvous manoeuvre attitude and spacecraft configuration
008 8-Jan-2011 DSS-26 2510
NNO 2510
Monitor
010 10-Jan-2011 DSS-55 2512
NNO 2512
Monitor
011 11-Jan-2011 DSS-26 2513
NNO 2513
Monitor
012 12-Jan-2011 DSS-24 2514
NNO 2514
Monitor
013 13-Jan-2011 DSS-25 2515
NNO 2515
Monitor
014 14-Jan-2011 DSS-26 2516
NNO 2516
Monitor
015 15-Jan-2011 DSS-55 2517
NNO 2517
Monitor
016 16-Jan-2011 DSS-24 2518
NNO 2518
Monitor

DoY = Day of year

At the end of the reporting period on 16 January, Rosetta was at 611 million km from Earth (4.08 AU); the one-way signal travel time was 33 min 58 sec (2038 sec). The spacecraft's distance from the Sun was 577 million km (3.86 AU).

Spacecraft

Payload Status
ALICE The instrument is currently OFF.
CONSERT The instrument is currently OFF.
COSIMA The instrument is currently OFF.
GIADA The instrument is currently OFF.
MIDAS The instrument is currently OFF.
MIRO The instrument is currently OFF.
OSIRIS The instrument is currently OFF.
ROSINA The instrument is currently OFF.
RPC The instrument is currently OFF.
RSI The USO is ON/muted since 3 February 2010 (DoY 032/2010).
VIRTIS The instrument is currently OFF.
Lander (Philae) The instrument is currently OFF.
SREM The instrument is ON with standard settings since 3 February 2010 (DoY 032/2010).

Future milestones

The spacecraft is now fully configured for the execution of the first rendezvous manoeuvre that is planned for the next reporting period. Due to its magnitude, this manoeuvre has been split into five nominal burns plus an optional extra one in the event that a final correction is needed. The detailed plan for the burns is given in the table below.

First Rendezvous Manoeuvre Burn Details
Burn Date ∆V[ms-1] Duration [min]
1A 17-Jan-2011 300 393
1B 18-Jan-2011 274 371
2A 21-Jan-2011 120 171
2B 23-Jan-2011 80 118
TRIM1 10-Feb-2011 16 33
TRIM2 3-Mar-2011 0 0

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Legal disclaimer
This report is based on the ESOC mission operations report, WOR #149. Please see the copyright section of the legal disclaimer (linked from the home page http://sci.esa.int) for terms of use.

Last Update: 1 September 2019
29-May-2020 11:43 UT

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