HD 37124 d

HD 37124 d is an extrasolar planet approximately 103 light-years away in the constellation of Taurus. The planet was discovered in 2005 orbiting the star HD 37124 in a long-period orbit. Based on its mass, it is considered to be a gas giant. An alternative solution to the radial velocities gives a period of 29.92 days and a minimum mass 17% that of Jupiter.^[1]

HD 37124 d

Discovery
Discovered by	Marcy et al.
Discovery site	United States
Discovery date	24 June 2005
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	3.19 AU (477,000,000 km)
Eccentricity	0.2
Orbital period (sidereal)	2,295 d
Time of periastron	2,449,606
Argument of periastron	266
Semi-amplitude	12.2
Star	HD 37124