OGLE-2005-BLG-169L

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OGLE-2005-BLG-169L
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]

Planetary system[edit]

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[edit]

References[edit]

  1. ^ a b c d e "SIMBAD query result: NAME OGLE 2005-BLG-169 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-30. 
  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. arXiv:astro-ph/0603276. Bibcode:2006ApJ...644L..37G. doi:10.1086/505421. 

External links[edit]

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