HD 20367 b

HD 20367 b
Discovery
Discovered by	Udry, Mayor, Queloz
Discovery site	Haute-Provence Observatory, France
Discovery date	June 2002
Detection method	radial velocity
Orbital characteristics
Apastron	1.645 AU (246,100,000 km)
Periastron	0.847 AU (126,700,000 km)
Semi-major axis	1.246 ± 0.075 AU (186,400,000 ± 11,200,000 km)
Eccentricity	0.320 ± 0.090
Orbital period (sidereal)	469.5 ± 9.3 d; 1.29 y
Time of periastron	2,451,860 ± 18
Argument of periastron	135 ± 16
Semi-amplitude	29.0 ± 3.0
Star	HD 20367
Physical characteristics
Mass	>1.17 ± 0.23 MJ; (>370 ± 70 MEarth)

HD 20367 b is an extrasolar planet approximately 88 light years away in the constellation of Aries. It has mass similar to that of Jupiter. It orbits the star at a mean distance that is a quarter farther than Earth orbits from the Sun. The 470-day (1.3 year) orbit is somewhat eccentric. However, subsequent observations put the existence of this planet strongly in doubt.^[2]

References[]

^ ^a ^b ^c ^d ^e ^f ^g Table 3, Catalog of Nearby Exoplanets, R. P. Butler et al., The Astrophysical Journal 646, #1 (July 2006), pp. 505–522, Bibcode:2006ApJ...646..505B, doi:10.1086/504701.
^ Wittenmyer, Robert A.; et al. (May 2009), "A Search for Multi-Planet Systems Using the Hobby-Eberly Telescope", The Astrophysical Journal Supplement, 182 (1): 97–119, arXiv:0903.0652, Bibcode:2009ApJS..182...97W, doi:10.1088/0067-0049/182/1/97.

External links[]

"Notes for planet HD 20367 b". The Extrasolar Planets Encyclopaedia.

Coordinates: 03^h 17^m 40.0461^s, +31° 07′ 37.372″

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[exoplanetcatalog-1] ^ ^a ^b ^c ^d ^e ^f ^g Table 3, Catalog of Nearby Exoplanets, R. P. Butler et al., The Astrophysical Journal 646, #1 (July 2006), pp. 505–522, Bibcode:2006ApJ...646..505B, doi:10.1086/504701.

[Wittenmyer2009-2] Wittenmyer, Robert A.; et al. (May 2009), "A Search for Multi-Planet Systems Using the Hobby-Eberly Telescope", The Astrophysical Journal Supplement, 182 (1): 97–119, arXiv:0903.0652, Bibcode:2009ApJS..182...97W, doi:10.1088/0067-0049/182/1/97.

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