| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 06m 05.32s [1] |
| Declination | –30° 43′ 57.5″ [1] |
| Apparent magnitude (V) | +20.4 [1] |
| Characteristics | |
| Spectral type | M? |
| Astrometry | |
| Distance | 8,800
ly (2,700 pc) |
| Details | |
| Mass | 0.49 M☉ |
| Other designations | |
EWS 2005-BUL-169, EWS 2005-BLG-169
[1] | |
| Database references | |
| SIMBAD | data |
OGLE-2005-BLG-169L is a dim and distant magnitude 20 galactic bulge star located about 2,700 parsecs away in the constellation Sagittarius. If it is a main sequence star, then it is most likely a red dwarf with about half of the mass of the Sun. Other possibilities are a white dwarf star, or (less likely) a neutron star or black hole. [1]
Planetary system
In 2006, an Uranus-mass extrasolar planet was detected by gravitational microlensing around this star. [2]
| Companion (in order from star) |
Mass |
Semimajor axis ( AU) |
Orbital period ( days) |
Eccentricity | Inclination | Radius |
|---|---|---|---|---|---|---|
| b | 0.041 MJ | 2.7 | ~3300 | — | — | — |
See also
References
- ^ a b c d e "SIMBAD query result: NAME OGLE 2005-BLG-169 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-30.
- ^ Gould, A.; et al. (2006). "Microlens OGLE-2005-BLG-169 Implies That Cool Neptune-like Planets Are Common". The Astrophysical Journal Letters. 644 (1): L37–L40. arXiv: astro-ph/0603276. Bibcode: 2006ApJ...644L..37G. doi: 10.1086/505421. S2CID 14270439.
External links
- "OGLE-05-169L". Exoplanets. Archived from the original on 2010-03-18. Retrieved 2009-04-30.
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