HD 106252 b

HD 106252 b is a large gas giant extrasolar planet about 10 times more massive than Jupiter. It was announced in 2001 by the European Southern Observatory.^[1] The discovery was confirmed by a different team using the Lick Telescope.^[4]

HD 106252 b

Discovery
Discovered by	Geneva Extrasolar Planet Search
Discovery site	La Silla Observatory
Discovery date	April 4, 2001[1]
Detection method	radial velocity
Orbital characteristics[2]
Semi-major axis	2.655 ± 0.017 AU (397,200,000 ± 2,500,000 km)
Eccentricity	0.480 ± 0.010
Orbital period (sidereal)	4.202+0.011 −0.010 yr
Inclination	46.0+4.9 −4.1 or 134.0+4.1 −4.9
Longitude of ascending node	105.3+10 −6.1
Time of periastron	JD 246463.0+8.4 −8.6
Argument of periastron	291.4 ± 1.5°
Semi-amplitude	152 ± 21[3]
Star	HD 106252
Physical characteristics
Mass	10.00+0.78 −0.73[2] MJ

Astrometry of HD 106252 has determined an orbital inclination of either 46° or 134°, depending on whether the solution is prograde or retrograde. This, combined with the minimum mass, gives a true mass of 10.0 M_J, larger than the minimum mass of 7.2 M_J.^[2]