HD 147018 c

HD 147018 c

Exoplanet		List of exoplanets
Parent star
Star		HD 147018
Constellation		Triangulum Australe
Right ascension	(α)	16^h 23^m 00.1463^s
Declination	(δ)	−61° 41′ 19.542″
Apparent magnitude	(mV)	8.4
Distance		140.12 ± 5.2 ly (42.96 ± 1.6 pc)
Spectral type		G9V
Orbital elements
Semi-major axis	(a)	1.922 ± 0.039 AU
Periastron	(q)	1.666 AU
Apastron	(Q)	2.178 AU
Eccentricity	(e)	0.133 ± 0.011
Orbital period	(P)	1008 ± 18 d (2.76 ± 0.049 y)
Argument of periastron	(ω)	-133.1 ± 6.9°
Time of periastron	(T0)	55301 ± 22 JD
Physical characteristics
Minimum mass	(m sin i)	6.56 ± 0.32 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 c
Database references
Extrasolar Planets Encyclopaedia		data
SIMBAD		data
Exoplanet Archive		data
Open Exoplanet Catalogue		data

HD 147018 c 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. It has mass at least six and a half time more than Jupiter and orbits HD 147018 nearly twice the distance between the Earth and the Sun. This planet is eight times farther away than HD 147018 b. This planet was discovered on August 11, 2009 by radial velocity method.

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