Tag Archives: ocm

Visualising Rosetta’s descent

Imagine how Rosetta’s descent might look if you were an observer at Comet 67P/C-G! This new animation visualises the final stages of Rosetta’s descent to Comet 67P/Churyumov–Gerasimenko on 30 September 2016. The sequence is speeded up to show...

What’s up with Rosetta

Contrary to the pre-landing phase, where the trajectories flown were designed with the lander delivery always in mind, we have now entered the science phase of the mission.

Go for 10 km!

With the last week spent at about 20 km from 67P/C-G, the decision has now been made to go to just 10 km. A series of manoeuvres will reduce Rosetta’s distance from its current 18.6 km orbit...

ESOC serves as the Operations Control Centre for ESA missions, and hosts our Main Control Room. Credit: ESA/J. Mai

The details on today’s orbit entry

Of the ten orbit correction manoeuvres (OCMs) that began on 7 May, there remains just one to complete: the last one is dubbed 'CATI' for 'Close Approach Trajectory – Insertion' and will take place today.

Rosetta and comet 67P/C-G to scale, assuming Rosetta is orbiting at a distance of 10 km, and the comet is about 4 km wide. Credits: ESA.

The third ‘fat’ burn

  We’re heading for the final 10,000 km between Rosetta and comet 67P/C-G today, with four of ten rendezvous burns left to complete before arriving on 6 August. Tomorrow’s burn is the third of four so-called ‘Far...

Half way through the burns!

Five down, five to go! We’re now half way through the rendezvous burn manoeuvres needed to put Rosetta on course with comet 67P/Churyumov-Gerasimenko, and tomorrow will check off the sixth. Tomorrow’s burn is also the second of...

Rosetta smells its exhaust

Just in time to coincide with today’s orbit correction manoeuvre, we have a great blog update contributed by Kathrin Altwegg, from the ROSINA science team at the University of Bern. A spacecraft is made out of terrestrial...

Big Burn No. 3 update 19:09 CEST

Today’s orbit correction manoeuvre ended fine, with no issues. Completed as of 17:33 CEST on board (confirmation received ~17:54 CEST on ground). All OK with the mission!

Thrusters ON – update for 15:40 CEST

Photo taken about 55 mins ago in the Rosetta control room at ESOC as the temperatures of the four thrusters being used in today’s orbit correction manoeuvre started to rise, indicating the burn had started! Thruster temperatures...

The Big Burns Part 3

On Wednesday, 18 June, Rosetta will conduct the third in a series of three ‘Big Burns’, which are themselves part of the ten-burn series of orbit correction manoeuvres taking us to comet 67P/C-G.

Some of the Rosetta flight control team at ESOC watching telemetry arrive from Rosetta during the second of three large orbit correction manoeuvres on 4 June 2014. Credit: ESA

Big Burn 2 complete

The thruster burn got underway as scheduled at 16:21:58 CEST (14:21:58 UTC) and ran for 6hrs:39mins, about 2 minutes less than planned but well within margins. About 190 kg of fuel was used.

The comet, which was discovered in 1969, has a diameter (nucleus) of four kilometres. Frame from 'Chasing A Comet – The Rosetta Mission' https://www.youtube.com/watch?v=5b7u6stKgfs Credit: DLR (CC-BY 3.0)

The Big Burns – Part 2

It's burn week in space again! Rosetta's next orbit correction manoeuvre – #BigBurn2 – is set for tomorrow, and is set to run for about 6hr:41mins and achieve a delta-v of 269.5 m/sec.

Rosetta Spacecraft Operations Manager Sylvain Lodiot monitoring the thruster burn on 21 May. Credit: ESA

Rosetta’s first Big Burn complete

The Rosetta team reports that last night's orbit correction manoeuvre (OCM) – or thruster burn – was completed as planned, providing the first of three big orbital 'pushes' to get the spacecraft lined up for comet arrival...