Astronomy:OGLE-2005-BLG-169L

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Short description: Star in the constellation Sagittarius
OGLE-2005-BLG-169L
Observation data
Equinox J2000.0]] (ICRS)
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
Distance8,800 ly
(2,700 pc)
Details
Mass0.49 M☉
Other designations
EWS 2005-BUL-169, EWS 2005-BLG-169[1]
Database references
SIMBADdata
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]

Planetary system

In 2006, an Uranus-mass extrasolar planet was detected by gravitational microlensing around this star.[2]

The OGLE-2005-BLG-169L planetary system
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

  1. ↑ 1.0 1.1 1.2 1.3 1.4 "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. 
  2. ↑ 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. doi:10.1086/505421. Bibcode: 2006ApJ...644L..37G. http://www.iop.org/EJ/article/1538-4357/644/1/L37/20518.html. 

External links

Coordinates: Sky map 18h 06m 05s, −30° 43′ 57″




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