14 Andromedae

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14 Andromedae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Andromeda
Right ascension 23h 31m 17.41s[1]
Declination +39° 14′ 10.3″[1]
Apparent magnitude (V) 5.22
Spectral type K0 III[2]
U−B color index 0.87
B−V color index 1.02
Variable type Suspected[citation needed]
Radial velocity (Rv) -58.8 km/s
Proper motion (μ) RA: 286.72 ± 0.23[1] mas/yr
Dec.: -84.22 ± 0.17[1] mas/yr
Parallax (π) 12.63 ± 0.27[1] mas
Distance 258 ± 6 ly
(79 ± 2 pc)
Absolute magnitude (MV) 6.24[citation needed]
Mass 2.2[2] M
Other designations
2MASS J23311742+3914102, BD+38°5023, GC 32703, HD 221345, HIP 116076, HR 8930, SAO 73311
Database references
Exoplanet Archive data
Extrasolar Planets

14 Andromedae or 14 And is an orange giant star approximately 258 light-years away[1] 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.[2]

Planetary system[edit]

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).[2]

The 14 Andromedae planetary system[3]
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
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).[4][5] The process involves public nomination and voting for the new names, and the IAU plans to announce the new names in mid-November 2015.[6]

See also[edit]


  1. ^ a b c d e f 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
  2. ^ a b c d 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. 
  3. ^ 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. 
  4. ^ NameExoWorlds: An IAU Worldwide Contest to Name Exoplanets and their Host Stars. IAU.org. 9 July 2014
  5. ^ NameExoWorlds.
  6. ^ NameExoWorlds.

External links[edit]

Coordinates: Sky map 23h 31m 17.4139s, +39° 14′ 10.313″