HD 118203

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HD 118203
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Ursa Major
Right ascension  13h 34m 02.5375s
Declination +53° 43′ 42.704″
Apparent magnitude (V) 8.05
Spectral type K0IV
Distance289 ly
(88.6 pc)
Other designations
BD+54° 1609, HIP 66192, SAO 28802
Database references
SIMBADThe star
planet b
Exoplanet Archivedata
Extrasolar Planets

HD 118203 is a K-type subgiant star located in the Ursa Major constellation 289 light years away from Earth. It has higher metallicity by 25% and very similar stellar age of 4.6 billion years. It has mass 23% greater than the Sun. It is invisible to the naked eye but it can be seen using binoculars or a telescope.

The HD 118203 planetary system[1]
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b >2.13 MJ 0.07 6.1335 ± 0.0006 0.309 ± 0.014

See also[edit]


  1. ^ da Silva, R.; et al. (2006). "Elodie metallicity-biased search for transiting Hot Jupiters I. Two Hot Jupiters orbiting the slightly evolved stars HD118203 and HD149143". Astronomy and Astrophysics. 446 (2): 717–722. arXiv:astro-ph/0510048. Bibcode:2006A&A...446..717D. doi:10.1051/0004-6361:20054116.

Coordinates: Sky map 13h 34m 02.5375s, +53° 43′ 42.704″