HD 69830 c

HD 69830 c

Extrasolar planet		List of extrasolar planets
File:HD 69830 and HD 69830 c.png HD 69830 and HD 69830 c (Celestia image)
Parent star
Star		HD 69830
Constellation		Puppis
Right ascension	(α)	08h 18m 23.947s
Declination	(δ)	−12° 37′ 55.81″
Apparent magnitude	(mV)	5.95
Distance		40.7 ± 0.2 ly (12.49 ± 0.05 pc)
Spectral type		K0V
Mass	(m)	0.86 ± 0.03 M☉
Radius	(r)	0.89 R☉
Temperature	(T)	5385 ± 20 K
Metallicity	[Fe/H]	−0.05 ± 0.02
Age		5.1–6.1 Gyr
Orbital elements
Semimajor axis	(a)	0.186 AU
Eccentricity	(e)	0.13 ± 0.06
Orbital period	(P)	31.56 ± 0.04 d
Argument of periastron	(ω)	221 ± 35°
Time of periastron	(T0)	2,453,469.6 ± 2.8 JD
Semi-amplitude	(K)	2.66 ± 0.16 m/s
Physical characteristics
Minimum mass	(m sin i)	0.038 MJ
Temperature	(T)	~522 K
Discovery information
Discovery date		May 18, 2006
Discoverer(s)		Lovis et al.
Discovery method		Radial velocity
Discovery status		Published
Database references
Extrasolar Planets Encyclopaedia		data
SIMBAD		data

HD 69830 c is an exoplanet orbiting HD 69830. It is the second-closest planet in its system and likely to be a rocky planet, not a gas giant. If it had formed as a gas giant, it would have stayed that way.