- OGLE-2005-BLG-169L
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OGLE-2005-BLG-169L Observation data
Epoch J2000.0 Equinox J2000.0Constellation 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
Encyclopaediadata
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
Planetary system
In 2006, an Uranus-mass extrasolar planet was detected by gravitational microlensing around this star.[2]
The OGLE-2005-BLG-169L system Companion
(in order from star)Mass Semimajor axis
(AU)Orbital period
(days)Eccentricity b 0.041 MJ 2.7 ~3300 ? See also
- List of extrasolar planets
- OGLE-2005-BLG-390L
- Optical Gravitational Lensing Experiment or OGLE
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 et al.; Udalski, A.; An, D.; Bennett, D. P.; Zhou, A.-Y.; Dong, S.; Rattenbury, N. J.; Gaudi, B. S. 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.
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″
Categories:- M-type main sequence stars
- Planetary systems
- Sagittarius constellation
- Gravitational lensing
- Main sequence star stubs
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