HD 107148

From Wikipedia, the free encyclopedia

**HD 107148**
Observation data Epoch J2000.0
Constellation (pronunciation)	Virgo
Right ascension	12^h 19^m 13.49^s
Declination	-03° 19′ 11.24″
Apparent magnitude (V)	+8.02
Distance	167.18 ± 8.48 ly (51.26 ± 2.6 pc)
Spectral type	G5V
Other designations
BD-02°3497, HIP 60081, SAO 138714

HD 107148 is an eighth magnitude star in the constellation Virgo. It is a yellow dwarf with a luminosity 1.41 times the Sun. It is twice as enriched with heavy elements than the Sun. In 2006, a discovery of Saturn-mass planet was announced. It should not be confused with HD 108147, which also have an extrasolar planet located in Crux constellation discovered in 2000.

1 HD 107148 b
2 See also
3 References
4 External links

[edit] HD 107148 b

**HD 107148 b**
Orbital elements
Extrasolar planet		List of extrasolar planets
Semimajor axis	(a)	0.269 ± 0.016 AU
Eccentricity	(e)	0.05 ± 0.17
Orbital period	(P)	48.056 ± 0.057 d
Angular distance	(θ)	5.244 mas
Longitude of periastron	(ω)	75°
Time of periastron	(T₀)	2,399,987 ± 12 JD
Semi-amplitude	(K)	11 ± 1.8 m/s
Physical characteristics
Mass	(m)	>0.21 ± 0.036 M_J
Discovery information
Discovery date		2006
Discoverer(s)		Butler et al.
Detection method		radial velocity
Discovery status		Published

A planet, designated as HD 107148 b is a jovian planet, the mass is only 70% that of Saturn, but only the minimum mass is known. Unlike Saturn, it orbits much closer to the star, only 26.9% of distance of Earth to the Sun, but like Saturn, it has low eccentricity about the same as Saturn.