HD 114762 b

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Not to be confused with HD 114762's stellar companion, HD 114762 B.
HD 114762 b[1]
Extrasolar planet List of extrasolar planets
Parent star
Star HD 114762
Constellation Coma Berenices
Right ascension (α) 13h 12m 19.7427s
Declination (δ) +17° 31′ 01.643″
Apparent magnitude (mV) 7.3
Distance 132.4 ly
(40.6 pc)
Spectral type F9V
Orbital elements
Semimajor axis (a) 0.353 ± 0.001[2] AU
Eccentricity (e) 0.3354 ± 0.0048[2]
Orbital period (P) 83.9151 ± 0.0030[2] d
Argument of
periastron
(ω) 201.28 ± 1.01[2]°
Time of periastron (T0) 2,449,889.106 ± 0.186[2] JD
Semi-amplitude (K) 612.48 ± 3.52[2] m/s
Physical characteristics
Minimum mass (m sin i) 11.069 ± 0.063[3] MJ
Discovery information
Discovery date 1989
Discoverer(s) David Latham, et al.
Discovery method Doppler spectroscopy
Discovery status Confirmed
Database references
Extrasolar Planets
Encyclopaedia
data
SIMBAD data

HD 114762 b (nicknamed Latham's Planet) is a massive gaseous[4][5] extrasolar planet,[6] approximately 132 light-years (40.6 pc) away in the constellation of Coma Berenices.[1][4] This optically undetected companion to the late F-type main-sequence star HD 114762 was discovered in 1989 by Latham, et al.,[5] and confirmed in 1991 by Cochran, et al.[7] Depending on inclination angle its lowest possible mass is 11 times Jupiter, and its highest mass around 145 times Jupiter. 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.[8][9] The companion orbits its star every 83.9 days and has an orbital eccentricity of 0.34;[2] for comparison, this orbit is similar to that of Mercury but with twice the eccentricity.[7]

See also[edit]

References[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): pp. 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. 
  2. ^ a b c d e f g Kane, Stephen R.; Henry, Gregory W.; Dragomir, Diana; Fischer, Debra A.; Howard, Andrew W. 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. ^ 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): pp. 46–59. arXiv:1210.6985. Bibcode:2012ApJ...761...46W. doi:10.1088/0004-637X/761/1/46. 
  4. ^ a b North, Gerald (2003). Astronomy in Depth. New York: Springer. p. 185. ISBN 9781852335809. 
  5. ^ a b Latham, David W.; Mazeh, Tsevi; Stefanik, Robert P.; Mayor, Michel; Burki, Gilbert (1989). "The unseen companion of HD114762: a probable brown dwarf". Nature 339 (6219): pp. 38–40. Bibcode:1989Natur.339...38L. doi:10.1038/339038a0. 
  6. ^ "HD 114762b -- Extra-solar Confirmed Planet". SIMBAD. Retrieved 31 August 2014. 
  7. ^ 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. 
  8. ^ 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): pp. 22–26. Bibcode:1995PASP..107...22H. doi:10.1086/133511. JSTOR 40680489. 
  9. ^ 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): pp. 239–247. arXiv:astro-ph/9904275. Bibcode:1999ApJ...520..239M. doi:10.1086/307451. 

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