Astrometric Jitter of the Sun as a Star

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Astrometric Jitter of the Sun as a Star

Post by Borislav on 27th May 2010, 7:59 am

http://arxiv.org/pdf/1005.4888

Why in the article no information about the detection of astrometric signals from Mercury, Venus, Mars and Jupiter?

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Re: Astrometric Jitter of the Sun as a Star

Post by Sirius_Alpha on 27th May 2010, 11:01 am

Detecting Solar System planets is much different than detecting exoplanets. We can detect exoplanets astrometrically (provided they were initially discovered through radial velocity) in a fairly straightforward way because the star and planetary system's motion is not coupled to Earth's. However, in the Solar System, Jupiter also influences Earth as well as the Sun. This complicates the issue.

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