HD 148427 b

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]
Distance193 ± 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
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

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. 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
  2. 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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