Abstract
The proposed baseline GAIA mission will be able to detect the astrometric signature of Jupiter-size planets around of the order of a million stars, using either global or narrow-angle astrometry. If the mission can realize the higher astrometric accuracy that photon statistics allows for bright stars, lower-mass planets (from Earth size to ten times larger) can be found around ten to a few hundred stars.
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Casertano, S., Lattanzi, M.G., Perryman, M.A.C., Spagna, A. (1996). Astrometry from Space: GAIA and Planet Detection. In: Shull, J.M., Thronson, H.A., Stern, S.A. (eds) The Search for Extra-Solar Terrestrial Planets: Techniques and Technology. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5808-4_8
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