Epoch J2000.0 Equinox J2000.0
|Right ascension||23h 31m 17.41s|
|Declination||+39° 14′ 10.3″|
|Apparent magnitude (V)||5.22|
|Spectral type||K0 III|
|U−B color index||0.87|
|B−V color index||1.02|
|Variable type||Suspected|
|Radial velocity (Rv)||-58.8 km/s|
|Proper motion (μ)||RA: 286.72 ± 0.23 mas/yr
Dec.: -84.22 ± 0.17 mas/yr
|Parallax (π)||12.63 ± 0.27 mas|
|Distance||258 ± 6 ly
(79 ± 2 pc)
|Absolute magnitude (MV)||6.24|
14 Andromedae or 14 And is an orange giant star approximately 258 light-years away in the constellation of Andromeda. The star is a suspected variable star. It is thought that 14 Andromedae was formerly an A- or F-type main-sequence star early in its life. As of 2008, an extrasolar planet is thought to be orbiting the star, being one of the few known planets to be orbiting an evolved intermediate-mass star.
In 2008, a planet (designated 14 Andromedae b) was announced to be orbiting the star. The planet was found to have a minimum mass of 4.8 Jupiter masses and orbiting in a circular orbit that takes 186 days to complete. The planet is one of the innermost planets around an evolved intermediate-mass star (such planets have only been discovered in clump giants).
(in order from star)
|b||5.33 ± 0.57 MJ||0.83||185.84 ± 0.23||0||—||—|
The planet and its host star is one of the planetary systems selected by the International Astronomical Union as part of their public process for giving proper names to exoplanets and their host star (where no proper name already exists). The process involves public nomination and voting for the new names, and the IAU plans to announce the new names in mid-November 2015.
- van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry
- Sato, Bun'ei; et al. (2008). "Planetary Companions to Evolved Intermediate-Mass Stars: 14 Andromedae, 81 Ceti, 6 Lyncis, and HD167042". Publications of the Astronomical Society of Japan 60 (6): 1317–1326. arXiv:0807.0268. Bibcode:2008PASJ...60.1317S. doi:10.1093/pasj/60.6.1317.
- Ligi, R.; et al. (2012). "A new interferometric study of four exoplanet host stars : θ Cygni, 14 Andromedae, υ Andromedae and 42 Draconis". Astronomy and Astrophysics 545. A5. arXiv:1208.3895. Bibcode:2012A&A...545A...5L. doi:10.1051/0004-6361/201219467.
- NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
- Jean Schneider (2011). "Notes for star 14 And". Extrasolar Planets Encyclopaedia. Retrieved 30 September 2011.
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