HD 147018 b

HD 147018 b
Exoplanet List of exoplanets
Parent star
Star HD 147018
Constellation Triangulum Australe
Right ascension (α) 16h 23m 00.1463s
Declination (δ) −61° 41′ 19.542″
Apparent magnitude (mV) 8.4
Distance140.12 ± 5.2 ly
(42.96 ± 1.6 pc)
Spectral type G9V
Orbital elements
Semi-major axis(a) 0.2388 ± 0.0039 AU
Periastron (q) 0.1269 AU
Apastron (Q) 0.3507 AU
Eccentricity (e) 0.4686 ± 0.0081
Orbital period(P) 44.236 ± 0.008 d
(0.12111 ± 2e-5 y)
Argument of
periastron		 (ω) -24.03 ± 1.23°
Time of periastron (T0) 4459.49 ± 0.1 JD
Physical characteristics
Minimum mass(m sin i)2.12 ± 0.07 MJ
Discovery information
Discovery date August 11, 2009
Discoverer(s) Segransan et al.
Discovery method radial velocity (CORALIE)
Discovery site La Silla Observatory
Discovery status Published
Other designations
HIP 80250 b
Database references
Extrasolar Planets
Encyclopaedia		data
SIMBADdata
Exoplanet Archivedata
Open Exoplanet Cataloguedata

HD 147018 b is a gas giant extrasolar planet which orbits the G-type main sequence star HD 147018, located approximately 140 light years away in the constellation Triangulum Australe. This planet has minimum mass more than twice that of Jupiter but this planet orbits a lot closer to the star than Jupiter to the Sun by a factor of 22. Meanwhile, it has an eccentric orbit. The planet can get as close to the star as 0.13 AU or can get as far as 0.35 AU. Further out, there is another superjovian planet HD 147018 c, which was discovered on the same date as this planet, on August 11, 2009.

References

    • Segransan; et al. (February 2010). "The CORALIE survey for southern extrasolar planets. XVI. Discovery of a planetary system around HD 147018 and of two long period and massive planets orbiting HD 171238 and HD 204313". Astronomy & Astrophysics. 511. article A45. arXiv:0908.1479. Bibcode:2010A&A...511A..45S. doi:10.1051/0004-6361/200912136.

    Coordinates: 16h 23m 00.1463s, −61° 41′ 19.542″


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