Corot
COnvection, ROtation and planetary Transits
Program cost: EUR 15 million. Owned by CNES.
High-precision stellar photometry mission aimed at study the internal structure
and dynamics of stars by observing their natural oscillation modes
(asteroseismology) and search for extrasolar planets (exoplanets). The
sensitivity achieved by Corot is said to be 10 times better than expected!
COROT can be seen as a precursor for two ESA missions, Eddington and Darwin.
Eddington is a larger telescope in a more distant orbit, capable of detecting
worlds down to half the size of Earth, and it will search for planets around
more than 500,000 stars. Eddington, unlike COROT, will also be able to detect
habitable planets. In addition it will return precise asteroseismology for
50,000 stars.
ESA then plans to continue its search for Earth-like worlds into the second
decade of the century with the launch of Darwin. This flotilla of eight
spacecraft will take pictures of Earth-like worlds, allowing scientists to
search for signs of life.
Brasil will provide ground facilities for data reception in Brasil and
elsewhere.
In Oct 2009, it was decided to fund and extend the mission for an additional 3
years.
Out
of service
|
late
2012
|
Cause
|
Instrument
stopped producing data
|
Decay
|
|
http://smsc.cnes.fr/COROT/
http://www.cnes-tv.com/corot_en/
sat-index articles
Prime
contractor
|
CNES
|
Platform
|
Proteus
(Alcatel Space)
|
Mass
at launch
|
638
kg
|
Mass
in orbit
|
|
Dimension
|
4.1
m length x 1.984 m diameter
|
Solar
array
|
|
Stabilization
|
|
DC
power
|
380
W
|
Design
lifetime
|
3
years
|
CoRoT's payload consists primarily of a telescope (2 mirrors off axis, 27 cm
aperture) and two cameras, one for each of the two mission objectives.
Thetelescope, developed under the responsibility of Laboratory of Astrophysics
(LAM) in Marseille, France, contains two parabolic mirrors, each with a 1.1
meter focal length. The field of view is two degrees², half for the
seismology mission and half for the exoplanet mission. The telescope also
includes an external "baffle", designed by ESA's ESTEC facilities in the
Netherlands, to shield the lens from light pollution. The two cameras were
developed under the leadership of the Space Studies and Astrophysics
Instrumentation Laboratory (LESIA) in Paris, France, and manufactured by ESA's
ESTEC. The satellite itself is based on the PROTEUS multi-mission platform,
developed in partnership between CNES and Alcatel Alenia Space.