Rosetta Earth Swingby media presentation 13.11.2009
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Rosetta Earth Swingby media presentation 13.11.2009

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Presentation to the media given at ESA/ESOC on 13 November 2009 during the closest approach of Rosetta for her third and last earth swingby.

Presentation to the media given at ESA/ESOC on 13 November 2009 during the closest approach of Rosetta for her third and last earth swingby.

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Rosetta Earth Swingby media presentation 13.11.2009 Presentation Transcript

  • 1. ROSETTA’s LAST EARTH SWINGBY ESA Control Centre, Darmstadt Friday, 13 November 2009
  • 2. The Rosetta Mission Dr Gerhard Schwehm Rosetta Mission Manager & Head of Solar System Science Operations Division, ESA
  • 3. Rosetta - a brief overview
    • Rosetta is an ESA scientific cornerstone mission
    • Initially studied as an ESA/NASA comet-nucleus sample return mission, it later became a European-only mission (with 3 NASA instruments) to perform in-situ measurements at the comet
    • Rosetta was endorsed by ESA in 1993 and launched in 2004
    • 67/P Churyumov-Gerasimenko is the final target comet, to be reached in 2014
    • A very precise injection into interplanetary orbit by Ariane 5 allowed Rosetta to have enough fuel for two asteroid encounters on the way:
    • - (2867) Steins, 5 September 2008 - (21) Lutetia, 10 July 2010
  • 4. Rosetta firsts
    • Rosetta will be the first mission to rendezvous with a comet nucleus and orbit it for an extended period
    • Rosetta will be the first mission to deploy a Lander (Philae) onto the surface of a comet nucleus.
  • 5. Rosetta’s objectives
    • Bringing a lab to a comet!
      • determine the physical properties and the chemical composition of a comet by in-situ investigations
    • Study the evolution of the cometary phenomena (coma and tail) while the comet approaches the Sun
    • Observe at least one asteroid from close by, so to study another class of primitive members of the solar system to understand better how it was formed
  • 6. Rosetta’s journey to 67P/Churyumov-Gerasimenko
      • Basically it is half-time for the mission
      • A little more than 5 years after launch and a little less than 5 years to reach the comet
      • The spacecraft has been performing extremely well and so have the teams here at ESOC, who are at the controls, at ESAC and the experiment teams
  • 7. Rosetta’s journey to 67P/Churyumov-Gerasimenko
    • All major milestones to bring Rosetta to the comet are completed…
  • 8. Launch 2 March 2004, from Kourou, French Guyana
  • 9. First Earth swingby, 4 March 2005
  • 10. Mars swingby, 25 February 2007
  • 11. Second Earth swingby 13 November 2007
  • 12. Steins flyby at a distance of 800 km, 5 September 2008
  • 13.
    • Today final planetary swingby to bring Rosetta on its way to comet 67P/Churyumov-Gerasimenko in 2014.
  • 14. Rosetta Earth swingby 3 Scientific Observations Dr Rita Schulz Rosetta Project Scientist, ESA
  • 15.
    • Last planetary swingby of Rosetta
    • Closest approach: 13 November 07:45 UT, 2,480 km above Earth surface
    • Moon closest approach: 13 November 15:41 UT at 220,000 km
    • Remote sensing instruments will perform science and calibration measurements
    • Limited visibility of Rosetta from Earth (observations from ESA/OGS on Tenerife)
    • Closest approach over day side
    • Over night side until shortly before the closest approach over the Pacific Ocean
    ROSETTA EARTH SWINGBY 3 Scientific Observations
  • 16. ROSETTA EARTH SWING BY 3 Scientific Observations Participating instruments and science measurements (6-19 November) RPC All sensors active (9-16 November) Earth-Moon system, plasma & magnetospheric studies OSIRIS Imaging of Earth (e.g. Berlin, NYC, Atlantic, islands in south pacific) and Moon ALICE Star occultation by Moon VIRTIS Earth night-side observations MIRO Moon studies (search for water) OSIRIS/VIRTIS/ALICE Auroral search and study, upper atmosphere, oxygen night glow
  • 17. Rosetta Critical swingby events Andrea Accomazzo Rosetta Spacecraft Operations Manager, ESA
  • 18. Interplanetary Trajectory
    • Heliocentric speeds:
      • Earth 30 km/s @ 150 Mkm from the Sun
      • Comet 33 km/s @ 186 Mkm from the Sun
    • Rosetta heliocentric speeds:
      • After launch 30.0 km/s
      • After 1 st Earth swingby 33.8 km/s
      • After 2 nd Earth swingby 35.1 km/s
      • After 3 rd Earth swingby 38.7 km/s
  • 19. Earth swingby 3
  • 20. Navigation Towards the Earth
  • 21. OSIRIS image 12 Nov 2009 Credit: ESA ©2009 MPS for OSIRIS Team MPS/UPD/LAM/IAA/RSSD/INTA/UPM/DASP/IDA
  • 22. The swingby as seen from the Earth
    • Closest approach (or perigee):
    • Time 07:45:40 UTC
    • Altitude 2481 km
    • Geocentric speed 13.34 km/s or 48,024 km/h
  • 23. Rosetta Future Mission Milestones Dr Paolo Ferri Head of Solar and Planetary Missions Division
  • 24. Mission Profile
  • 25. Future Mission Milestones
    • Asteroid Lutetia flyby: 10 th July 2010;
    • Deep Space Hibernation: July 2011-January 2014;
    • Comet arrival: May 2014;
    • Landing: November 2014;
    • Perihelion: August 2015;
    • End of mission: December 2015.