HD 148427 b
| Exoplanet | List of exoplanets | |
|---|---|---|
| Parent star | ||
| Star | HD 148427 | |
| Constellation | Ophiuchus | |
| Right ascension | (α) | 16h 28m 28.151s[1] |
| Declination | (δ) | –13° 23′ 58.69″[1] |
| Distance | 193 ± 7[1] ly (59 ± 2[1] pc) | |
| Spectral type | K0IV | |
| Orbital elements | ||
| Semi-major axis | (a) | 0.93 ± 0.01 AU |
| Periastron | (q) | 0.78 AU |
| Apastron | (Q) | 1.08 AU |
| Eccentricity | (e) | 0.16 ± 0.08 |
| Orbital period | (P) | 331.5 ± 3 d (0.9076 ± 0.0082 y) |
| Argument of periastron |
(ω) | 277 ± 68° |
| Time of periastron | (T0) | 13991 ± 15 JD |
| Physical characteristics | ||
| Minimum mass | (m sin i) | 0.96 ± 0.1 MJ |
| Discovery information | ||
| Discovery date | August 12, 2009 | |
| Discoverer(s) | ||
| Discovery method | radial velocity | |
| Discovery status | Published[2] | |
| Database references | ||
| Extrasolar Planets Encyclopaedia | data | |
| SIMBAD | data | |
| Exoplanet Archive | data | |
| Open Exoplanet Catalogue | data | |
HD 148427 b is a gas giant extrasolar planet which orbits the K-type subgiant star HD 148427, located approximately 193 light years away in the constellation Ophiuchus. This planet has a minimum mass slightly less than Jupiter and orbits slightly closer to the star than Earth to the Sun. The orbital revolution takes 331.5 days or 0.9076 years.[2] This planet was discovered on August 12, 2009 by radial velocity method.
References
- 1 2 3 4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.Vizier catalog entry - 1 2 Fischer, Debra; et al. (2009). "Five planets and an independent confirmation of HD 196885 Ab from Lick Observatory". The Astrophysical Journal. 703 (2): 1545–1556. arXiv:0908.1596. Bibcode:2009ApJ...703.1545F. doi:10.1088/0004-637X/703/2/1545.
Coordinates: 
16h 28m 28.1513s, −13° 23′ 58.704″
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