Asset Publisher

No. 26 - Preparing for second part of Commissioning Phase

No. 26 - Preparing for second part of Commissioning Phase

Report for fortnight 20 August to 3 SeptemberIn the first week of the reporting period the spacecraft was monitored only with a single New Norcia pass, during which a HGA pattern calibration test was carried out. In the second week all New Norcia passes (except for one) and one DSN pass were taken, to allow the start of the preparatory activities for the upcoming Commissioning Phase part 2, which is due to start on 6 September.

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.

Last Update: 1 September 2019
10-Jul-2020 00:53 UT

ShortUrl Portlet

Shortcut URL

https://sci.esa.int/s/wVeaO1A

Images And Videos

Related Publications

Related Links

See Also

Documentation

Further Readings