HD 20367 b

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]

HD 20367 b
Discovery
Discovered byUdry, Mayor, Queloz
Discovery siteHaute-Provence Observatory,
 France
Discovery dateJune 2002
radial velocity
Orbital characteristics
Apastron1.645 AU (246,100,000 km)
Periastron0.847 AU (126,700,000 km)
1.246 ± 0.075 AU (186,400,000 ± 11,200,000 km)[1]
Eccentricity0.320 ± 0.090[1]
469.5 ± 9.3[1] d
1.29 y
2,451,860 ± 18[1]
135 ± 16[1]
Semi-amplitude29.0 ± 3.0[1]
StarHD 20367
Physical characteristics
Mass>1.17 ± 0.23[1] MJ
(>370 ± 70 M⊕)

    References
    1. 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.
    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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