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″
This article is issued from Wikipedia - version of the 12/29/2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.