Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21323409m&link_type=abstract
American Astronomical Society, AAS Meeting #213, #234.09; Bulletin of the American Astronomical Society, Vol. 41, p.507
Astronomy and Astrophysics
Astrophysics
Scientific paper
Planet Hunter is a proposed spaceborne optical interferometer that can measure positions of bright stars with a precision of 1 microarcsec relative to reference stars. It can detect Earth-mass planets orbiting 1 AU from Sun-like stars within 20 pc. Planet Hunter can detect rocky planets in the habitable zone of 65 nearby FGK stars and determine the planet masses unambiguously, as well as masses of ice-giants and gas giants within 5 AU. Planet Hunter can also determine the full set orbital parameters of the planets it detects, including eccentricity and the 7-D orbit. The resulting ephemeris can predict the intervals of time when the planet resides outside the inner working angle, making spectroscopy possible by future imaging missions. The program is currently a NASA Astrophysics Strategic Mission Concept Study, carried out mostly at JPL.
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