OGLE-2005-BLG-169L
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| 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 |
| Extrasolar Planets Encyclopaedia |
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]
Contents |
[edit] 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 |
|---|---|---|---|---|
| b | 0.041 MJ | 2.7 | ~3300 | ? |
[edit] See also
[edit] References
- ^ a b c d e "SIMBAD query result: NAME OGLE 2005-BLG-169 -- Star". Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NAME+OGLE+2005-BLG-169. 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. http://www.iop.org/EJ/article/1538-4357/644/1/L37/20518.html.
[edit] External links
- "OGLE-05-169L". Exoplanets. http://media4.obspm.fr/exoplanets/base/etoile.php?nom=OGLE-05-169L. Retrieved 2009-04-30.
Coordinates: 
18h 06m 05s, −30° 43′ 57″
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