HD 180902 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 180902 | |
| Constellation | Sagittarius | |
| Right ascension | (α) | 19h 19m 17.7098s[1] |
| Declination | (δ) | −23° 33′ 29.360″[1] |
| Apparent magnitude | (mV) | 7.78 |
| Distance | 323±9 ly (99±3 pc) | |
| Spectral type | K0III/IV | |
| Mass | (m) | 1.52 ± 0.11 M☉ |
| Radius | (r) | 4.1 ± 0.1 R☉ |
| Temperature | (T) | 5030 ± 44 K |
| Metallicity | [Fe/H] | 0.04 ± 0.03 |
| Age | 2.8 ± 0.7 Gyr | |
| Orbital elements | ||
| Semi-major axis | (a) | 1.39 ± 0.4 AU |
| Eccentricity | (e) | 0.09 ± 0.11 |
| Orbital period | (P) | 479 ± 13 d |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 1.6 ± 0.2 MJ |
| Discovery information | ||
| Discovery date | 2010-03-17 | |
| Discoverer(s) | Johnson et al.[2] | |
| Discovery method | Doppler spectroscopy | |
| Discovery status | ||
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 180902 b is an extrasolar planet orbiting the K-type star HD 180902 approximately 323 light years away in the constellation Sagittarius.[2]
See also
References
- 1 2 Brown, A. G. A.; et al. (2016). "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties". Astronomy and Astrophysics. 595. A2. arXiv:1609.04172. Bibcode:2016A&A...595A...2G. doi:10.1051/0004-6361/201629512. Gaia Data Release 1 catalog entry
- 1 2 Johnson, John Asher; et al. (2010). "Retired a Stars and Their Companions. IV. Seven Jovian Exoplanets from Keck Observatory". Publications of the Astronomical Society of the Pacific. 122 (892): 701–711. arXiv:1003.3445. Bibcode:2010PASP..122..701J. doi:10.1086/653809.
External links
- "HD 180902 b". The Extrasolar Planets Encyclopaedia.
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