HD 114762 b

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HD 114762 b[1]
Discovered byDavid Latham, et al.
Discovery site United States
Discovery date1989
Doppler spectroscopy
Orbital characteristics
0.353±0.001 AU
83.9151±0.0030[2] d
StarHD 114762

HD 114762 b is a massive gaseous[3][4] extrasolar planet,[5] approximately 126 light-years (38.6 pc) away in the constellation of Coma Berenices.[1][3] This optically undetected companion to the late F-type main-sequence star HD 114762 was discovered in 1989 by Latham, et al.,[4] and confirmed in an October 1991 paper by Cochran, et al.[6]

The companion orbits its star every 83.9 days at an approximate distance of 0.35 AU, with an orbital eccentricity of 0.34;[2] for comparison, this orbit is similar to that of Mercury but with twice the eccentricity.[6] Depending on inclination angle, it has a minimum mass of 11.069±0.063  MJ (at 90°)[7] and a maximum mass of approximately 63.2 MJ (at 10°).[8]

HD 114762 b may be the first extrasolar planet ever detected, predating the 1992 pulsar planets found around PSR B1257+12 and main-sequence yellow dwarf 51 Pegasi.[9][10] By 2012, its status as an exoplanet was confirmed.[8][5][dubious ] At an event celebrating the career of discoverer Dr. David Latham and attended by his colleagues and collaborators, the planet was informally dubbed "Latham's Planet".[11] However, this name has no official standing with the International Astronomical Union.

See also[edit]


  1. ^ a b Butler, R. P.; Wright, J. T.; Marcy, G. W.; Fischer, D. A.; Vogt, S. S.; et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal. 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701.
  2. ^ a b c d e f Kane, Stephen R.; et al. (2011). "Revised Orbit and Transit Exclusion for HD 114762b". The Astrophysical Journal Letters. 735 (2). L41. arXiv:1106.1434. Bibcode:2011ApJ...735L..41K. doi:10.1088/2041-8205/735/2/L41.
  3. ^ a b North, Gerald (2003). Astronomy in Depth. New York: Springer. p. 185. ISBN 9781852335809.
  4. ^ a b Latham, David W.; Mazeh, Tsevi; Stefanik, Robert P.; Mayor, Michel; Burki, Gilbert (4 May 1989). "The unseen companion of HD114762: a probable brown dwarf". Nature. 339 (6219): 38–40. Bibcode:1989Natur.339...38L. doi:10.1038/339038a0.
  5. ^ a b "HD 114762b". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 31 August 2014.
  6. ^ a b Cochran, William D.; Hatzes, Artie P.; Hancock, Terry J. (10 October 1991). "Constraints on the Companion Object to HD 114762". The Astrophysical Journal. 380: L35–L38. Bibcode:1991ApJ...380L..35C. doi:10.1086/186167.
  7. ^ Wang, Sharon Xuesong; Wright, Jason T.; Cochran, William; Kane, Stephen R.; Henry, Gregory W.; et al. (2012). "The Discovery of HD 37605c and a Dispositive Null Detection of Transits of HD 37605b". The Astrophysical Journal. 761 (1): 46–59. arXiv:1210.6985. Bibcode:2012ApJ...761...46W. doi:10.1088/0004-637X/761/1/46.
  8. ^ a b Kane, Stephen R.; Gelino, Dawn M. (2012). "Distinguishing between stellar and planetary companions with phase monitoring". Monthly Notices of the Royal Astronomical Society. 424 (1): 779–788. arXiv:1205.5812. Bibcode:2012MNRAS.424..779K. doi:10.1111/j.1365-2966.2012.21265.x.
  9. ^ Hale, Alan (1995). "On the Nature of the Companion to HD 114762". Publications of the Astronomical Society of the Pacific. The University of Chicago Press. 107 (707): 22–26. Bibcode:1995PASP..107...22H. doi:10.1086/133511. JSTOR 40680489.
  10. ^ Marcy, Geoffrey W.; Butler, R. Paul; Vogt, Steven S.; Fischer, Debra; Liu, Michael C. (1999). "Two New Candidate Planets in Eccentric Orbits". The Astrophysical Journal. 520 (1): 239–247. arXiv:astro-ph/9904275. Bibcode:1999ApJ...520..239M. doi:10.1086/307451.
  11. ^ Johnson, John (2016). How do you find an Exoplanet?. New Jersey: Princeton University Press. p. 137. ISBN 978-0-691-15681-1.

Coordinates: Sky map 13h 12m 19.7427s, +17° 31′ 01.643″