HD 136118

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HD 136118
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Serpens
Right ascension 15h 18m 55.4719s
Declination –01° 35′ 32.590″
Apparent magnitude (V) +6.94
Distance 171 ly
(52.3 pc)
Spectral type F9V
Other designations
Database references
SIMBAD data

HD 136118 is a F-type main-sequence star located approximately 171 light-years away in the constellation of Serpens Cauda. It is an F-type dwarf and has apparent magnitude +6.94.

Brown dwarf companion[edit]

The astronomer Debra Fischer discovered a very massive planet, which was announced on February 7, 2002.[1] On November 25, 2009, the object turned out to be a brown dwarf.[2]

The HD 136118 planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b 42+18
−11
 MJ
1.45 ± 0.25 1209 ± 24 0.352 ± 0.006

See also[edit]

References[edit]

  1. ^ Fischer, Debra A. et al. (2002). "Planetary Companions to HD 136118, HD 50554, and HD 106252". Publications of the Astronomical Society of the Pacific 114 (795): 529–535. Bibcode:2002PASP..114..529F. doi:10.1086/341677. 
  2. ^ Martioli, E. et al. (2010). "The Mass of the Candidate Exoplanet Companion to HD136118 from Hubble Space Telescope Astrometry and High-Precision Radial Velocities". The Astrophysical Journal 708 (1): 625–634. arXiv:0911.4645. Bibcode:2010ApJ...708..625M. doi:10.1088/0004-637X/708/1/625. 

External links[edit]

Coordinates: Sky map 15h 18m 55.4719s, −01° 35′ 32.590″