HD 188015 b is an extrasolar planet announced by the California and Carnegie Planet Search team in 2005.[1] Like majority of known planets, it was discovered using the radial velocity method.
| Discovery | |
|---|---|
| Discovered by | Marcy et al.[1] |
| Discovery site |  United States |
| Discovery date | January 25, 2005 |
| Doppler spectroscopy | |
| Orbital characteristics | |
| Apastron | 1.368 AU (204,600,000 km) |
| Periastron | 1.038 AU (155,300,000 km) |
| 1.203 ± 0.070 AU (180,000,000 ± 10,500,000 km) | |
| Eccentricity | 0.137 ± 0.026 |
| 461.2 ± 1.7 d 1.263 y | |
Average orbital speed | 28.47 |
| 2,451,787 ± 17 | |
| 222° ± 10 | |
| Semi-amplitude | 37.6 ± 1.2 |
| Star | HD 188015 |
| Physical characteristics | |
| Mass | >1.50 ± 0.13 MJ |
The planet has a minimum mass of about 1.25 Jupiter masses. It orbits HD 188015 in a slightly eccentric orbit with a semi-major axis about 20% further than Earth's.
Stability analysis reveals that if Earth-sized planets existed at the Trojan points of HD 188015 b, their orbits would be stable for long periods of time.[2]
References edit
- ^ a b Marcy, Geoffrey W.; et al. (2005). "Five New Extrasolar Planets". The Astrophysical Journal. 619 (1): 570–584. Bibcode:2005ApJ...619..570M. CiteSeerX 10.1.1.516.6667. doi:10.1086/426384.
- ^ R. Schwarz; R. Dvorak; Á. Süli; B. Érdi (November 2007). "Survey of the stability region of hypothetical habitable Trojan planets". Astronomy & Astrophysics. 474 (3): 1023–1029. Bibcode:2007A&A...474.1023S. doi:10.1051/0004-6361:20077994.: HD 93083, HD 17051, HD 28185, HD 27442, HD 188015, HD 99109, HD 221287
Bibliography edit
- Butler, R. P.; 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. S2CID 119067572.
- Raghavan; Henry, Todd J.; Mason, Brian D.; Subasavage, John P.; Jao, Wei‐Chun; Beaulieu, Thom D.; Hambly, Nigel C. (2006). "Two Suns in The Sky: Stellar Multiplicity in Exoplanet Systems". The Astrophysical Journal. 646 (1): 523–542. arXiv:astro-ph/0603836. Bibcode:2006ApJ...646..523R. doi:10.1086/504823. S2CID 5669768.
External links edit
- "Notes for planet HD 188015 b". Extrasolar Planets Encyclopaedia.
- "HD 188015". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-09-08.
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