HD 188015 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 188015 | |
| Constellation | Vulpecula | |
| Right ascension | (α) | 19h 52m 04.5435s |
| Declination | (δ) | +28° 06′ 01.356″ |
| Distance | 171.66 ly (52.63 pc) | |
| Spectral type | G5IV | |
| Orbital elements | ||
| Semi-major axis | (a) | 1.203 ± 0.070 AU |
| Periastron | (q) | 1.038 AU |
| Apastron | (Q) | 1.368 AU |
| Eccentricity | (e) | 0.137 ± 0.026 |
| Orbital period | (P) | 461.2 ± 1.7 d (1.263 y) |
| Orbital speed | (υ) | 28.47 km/s |
| Argument of periastron |
(ω) | 222° ± 10° |
| Time of periastron | (T0) | 2,451,787 ± 17 JD |
| Semi-amplitude | (K) | 37.6 ± 1.2 m/s |
| Physical characteristics | ||
| Mass | (m) | >1.50 ± 0.13 MJ |
| Discovery information | ||
| Discovery date | January 25, 2005 | |
| Discoverer(s) | Marcy et al.[1] | |
| Discovery method | Doppler spectroscopy | |
| Discovery site |  United States | |
| Discovery status | Published[1] | |
| Other designations | ||
| HIP 97769 b
| ||
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.
The planet has a minimum mass about quarter greater than Jupiter. It orbits the star in a slightly eccentric orbit in a mean distance 20% further than Earth orbits the Sun.
Stability analysis reveals that the orbits of Earth-sized planets in the Trojan points of HD 188015 b would be stable for long periods of time.[2]
References
- 1 2 3 Marcy, Geoffrey W.; et al. (2005). "Five New Extrasolar Planets". The Astrophysical Journal 619 (1): 570–584. Bibcode:2005ApJ...619..570M. doi:10.1086/426384.
- ↑ R. Schwarz, R. Dvorak, Á. Süli, and 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
- 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.
- 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.
External links
- "Notes for planet HD 188015 b". The Extrasolar Planets Encyclopaedia.
- "HD 188015". Exoplanets.
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