No. 26 - Preparing for second part of Commissioning Phase
These activities included:
- Upload of modified OBCPs for payload and Navcam control
- Upload of payload on-board software maintenance files, required for pre-CVP instrument software maintenance
- Periodic AOCS maintenance, including IMP cycling and SAS calibration
Finally on 2 and 3 September the first payload on-board software maintenance was executed with the ALICE instrument. Post-upload verification tests were carried out and confirmed the correct functioning of the new software.
The table below shows a chronology of the main activities in the reporting period:
|
Mission Day |
Date |
DOY |
Main Activity |
|
172 |
20/21.08.04 |
233/234 |
Skipped pass |
|
173 |
21/22.08.04 |
234/235 |
Skipped pass |
|
174 |
22/23.08.04 |
235/236 |
Skipped pass |
|
175 |
23/24.08.04 |
236/237 |
Skipped pass |
|
176 |
24/25.08.04 |
237/238 |
Skipped pass |
|
177 |
25/26.08.04 |
238/239 |
Skipped pass |
|
178 |
26/27.08.04 |
239/240 | HGA pattern calibration |
|
179 |
27/28.08.04 |
240/241 |
Monitoring pass, OBCP maintenance |
|
180 |
28/29.08.04 |
241/242 |
Skipped pass |
|
181 |
29/30.08.04 |
242/243 |
Monitoring pass, upload payload OBSM files |
|
182 |
30/31.08.04 |
243/244 |
Periodic AOCS maintenance (IMP cycling, SAS calibration) |
|
183 |
31.08/01.09.04 |
244/245 |
Monitoring pass, upload payload OBSM files |
|
184 |
01/02.09.04 |
245/246 |
Monitoring pass |
|
185 |
02/03.09.04 |
246/247 | ALICE on-board SW upload and verification |
Rosetta reached its maximum distance from Earth for this year, 76 million km, on 28 August. Now the distance is slowly decreasing with the spacecraft heading towards the first Earth flyby on 4 March 2005.
At the end of the last New Norcia pass in the reporting period (DOY 247) Rosetta was at 75.8 million km from the Earth. The one-way signal travel time was 4 minutes 12 seconds.