No. 95 - Trajectory Correction Manoeuvre
25 March 2008 17:15Report for Period 16 February to 14 March 2008
Rosetta is continuing its 4th orbit around the Sun as part of its interplanetary journey. The spacecraft distance from the Sun is increasing and will reach a maximum of about 2.26 AU in December 2008.
Activities had a relatively low profile during the reporting period and performance of the mission has been nominal.
On 21 February a trajectory correction manoeuvre has been executed as part of the post Earth swing-by activities.
Having crossed the 1.2 AU Sun distance the spacecraft has been reconfigured for intermediate Sun distance for what concerns the thermal subsystem.
The ground segment computer system has been reconfigured to be compliant with the ESOC policy on redundancy segregation.
A total of 6 New Norcia (NNO) passes and 2 Deep Space Network (DSN) passes were taken during the reporting period.
At the end of the reporting period (DoY 074) Rosetta was at 59.4 million km from Earth (0.39 AU) and the one-way signal travel time was 198 seconds. The distance to the Sun was 195.4 million km (1.30 AU).
During the reporting period further tests on the OSIRIS instrument have been conducted.
The cruise phase continues towards asteroid Steins that will be encountered early September 2008. During the next weeks Rosetta will perform a crucial test of the attitude dynamics to be experienced during the asteroid fly-by planned for September 2008. After this the spacecraft will be configured for a 3-months phase of Near Sun Hibernation Mode to be concluded early July.