Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Sagittarius |
Right ascension | 18h 08m 04s [1] |
Declination | −27° 09′ 00″ [1] |
Astrometry | |
Distance | 2300−400+700
[2]
ly (700−120+210 [2] [3] pc) |
Details | |
Mass | 0.060+0.028−0.021 [3] 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. [3] In 2008, an Earth-sized extrasolar planet was announced to be orbiting this object. [4]
The discovery of a planet, MOA-2007-BLG-192Lb, orbiting this object was announced on June 2, 2008. [4] 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. [3]
Companion | Mass | Observed separation ( AU) |
b | 3.3+4.9−1.6 [3] M🜨 | 0.62+0.22−0.16 [3] |