HD 212301

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HD 212 301 is about 180 light years distant star system in the constellation octane. It consists of two stars, as well as an exoplanet.

Main component of the system is a main sequence star of spectral type F8 like with an apparent visual magnitude of 7.8, has 1.3 times the mass of the sun. In an angular distance of 4 ", 4 (about 230 AE ) is a red dwarf of spectral type M3 was detected.

Exoplanet

The discovery of exoplanets was given on 22 August 2005 announced at the colloquium " The Tenth Anniversary of 51 Peg b " at the Observatoire de Haute -Provence. The exoplanet, called HD 212 301 b (or HD 212 301 Ab) has 0.45 times the mass of Jupiter and orbits the main component in 2,457 days in an orbit with a semimajor axis of 0.036 AU ( 5.4 million km ).

Swell

  • Mugrauer, M.; Neuhäuser, R.: "The multiplicity of exoplanet host stars. New low -mass stellar companions of the exoplanet host stars HD 125612 and HD 212 301 "; In: Astronomy and Astrophysics, Vol 494, No. 1, pp. 373ff. (2009)
Declination Astrometry Radial velocity Light-year Proper motion Solar mass Smithsonian Astrophysical Observatory Star Catalog Haute-Provence Observatory
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