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MOA-2007-BLG-192L & MOA-2007-BLG-192Lb |
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| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 08m 04s[1] |
| Declination | −27° 09′ 00″[1] |
| Astrometry | |
| Distance | 3000±1000 ly (1000±400[2] pc) |
| Details | |
| Mass | 0.060+0.028−0.021[2] M☉ |
| Database references | |
| SIMBAD | data |
MOA-2007-BLG-192L is a low-mass red dwarf star or brown dwarf, approximately 3,000 light-years away in the constellation of Sagittarius. It is estimated to have a mass approximately 6% of the Sun's.[2] In 2008, an Earth-sized extrasolar planet was announced to be orbiting this object.[3]
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The discovery of a planet, MOA-2007-BLG-192Lb, orbiting this object was announced on June 2, 2008.[3] This planet, with a mass of approximately 3.3 times that of Earth, is one of the smallest known extrasolar planets. It was found when it caused a gravitational microlensing event on the night of May 24, 2007, which was detected as part of the MOA-II gravitational microlensing survey at the Mount John University Observatory in New Zealand.[2]
| Companion | Mass | Observed separation (AU) |
| b | 3.3+4.9−1.6[2] M⊕ | 0.62+0.22−0.16[2] |