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Fact Sheet: This artist's impression shows the Rosetta Orbiter in the foreground and the Lander in the background.
This artist's impression shows the Rosetta Orbiter in the foreground and the Lander in the background.

LAUNCH DATE: 02-Mar-2004 07:17 UT  
MISSION END:End of mission (nominal) - Perihelion passage - 2015.
LAUNCH VEHICLE:Ariane 5 G+ from Kourou, French Guiana.
LAUNCH MASS:3000 kg
MISSION PHASE: Spacecraft and Payload Commissioning
ORBIT:
Rosetta has a complex trajectory which includes four gravity assist manoeuvres (3 x Earth, 1 x Mars) before finally reaching the comet. On arrival at 67P Rosetta will enter orbit around the comet and stay with it as it journeys in towards the Sun.
MILESTONES:
To study the origin of comets, the relationship between cometary and interstellar material, and its implications with regard to the origin of the Solar System. The measurements to be made to achieve this are:

  • Global characterisation of the nucleus, determination of dynamic properties, surface morphology and composition;
  • Determination of the chemical, mineralogical and isotopic compositions of volatiles and refractories in a cometary nucleus;
  • Determination of the physical properties and interrelation of volatiles and refractories in a cometary nucleus;
  • Study of the development of cometary activity and the processes in the surface layer of the nucleus and the inner coma (dust/gas interaction);
  • Global characterisation of asteroids, including determination of dynamic properties, surface morphology and composition.
THE MISSION:
The International Rosetta Mission was approved in November 1993 by ESA's Science Programme Committee as the Planetary Cornerstone Mission in ESA's long-term space science programme. The mission goal was initially set for a rendezvous with comet 46 P/Wirtanen. After postponement of the initial launch a new target was set: Comet 67 P/Churyumov- Gerasimenko. On its 10 year journey to the comet, the spacecraft will pass by two asteroids: 2867 Steins (in 2008) and 21 Lutetia (in 2010).
NEWS AND ANNOUNCEMENTS
Hubble and Rosetta unmask nature of recent asteroid wreck
Rosetta operations strategy modified after RCS test
OSIRIS unveils asteroid Steins
LATEST STATUS REPORT
18 February 2011
31 January 2011
21 January 2011
ELSEWHERE ON ESA.INT
25 years of comet science
Rosetta to sleep through loneliest leg of comet mission
SPECIAL FEATURES
Rosetta flyby of asteroid (21) Lutetia
Preliminary science results from the 3rd Earth swingby
Rosetta flies by asteroid Steins - overview
SPECIAL SITES
Rosetta for the general public and the media
Rosetta Science Operations Centre (RSOC)
MULTIMEDIA
 
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