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]
| Discovery | |
|---|---|
| Discovered by | Udry, Mayor, Queloz |
| Discovery site | Haute-Provence Observatory, |
| Discovery date | June 2002 |
| radial velocity | |
| Orbital characteristics | |
| Apastron | 1.645 AU (246,100,000 km) |
| Periastron | 0.847 AU (126,700,000 km) |
| 1.246 ± 0.075 AU (186,400,000 ± 11,200,000 km)[1] | |
| Eccentricity | 0.320 ± 0.090[1] |
| 469.5 ± 9.3[1] d 1.29 y | |
| 2,451,860 ± 18[1] | |
| 135 ± 16[1] | |
| Semi-amplitude | 29.0 ± 3.0[1] |
| Star | HD 20367 |
| Physical characteristics | |
| Mass | >1.17 ± 0.23[1] MJ (>370 ± 70 M⊕) |
References
- 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.
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