MOA-2007-BLG-400L is a star located 22472.1 light-years (6890 parsecs) away in the constellation of Sagittarius. This star is presumed to be a red dwarf with a spectral type of M3V, based on its mass of 0.35 M☉.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 09m 42s |
| Declination | –29° 13′ 27″ |
| Apparent magnitude (V) | 22 |
| Characteristics | |
| Spectral type | M3V? |
| Astrometry | |
| Distance | 22472.1 ly (6890 pc) |
| Details | |
| Mass | 0.35 ± 0.15 M☉ |
| Database references | |
| SIMBAD | data |
Planetary system
editIn September 2008, the discovery of an extrasolar planet was announced by the Microlensing Follow Up Network (μFUN) and the Microlensing Observations in Astrophysics (MOA) Collaboration. This planet was detected by the gravitational microlensing method based on an event recorded in September 2007.
| Companion | Mass | Observed separation (AU) |
| b | 0.9 ± 0.4 MJ | 0.85 ± 0.25 |
See also
editReferences
edit- Dong, Subo; et al. (2009). "Microlensing Event MOA-2007-BLG-400: Exhuming the Buried Signature of a Cool, Jovian-Mass Planet" (abstract). The Astrophysical Journal. 698 (2): 1826–1837. arXiv:0809.2997. Bibcode:2009ApJ...698.1826D. doi:10.1088/0004-637X/698/2/1826. S2CID 16658501.web preprint
External links
edit
 | This article about a red dwarf is a stub. You can help Wikipedia by expanding it. |