HD 74156 c

HD 74156 c is an extrasolar planet with a minimum mass about eight times that of Jupiter orbiting the star HD 74156. It is most likely a gas giant. This planet was discovered by Dominique Naef and Michel Mayor in April 2001 together with the planet HD 74156 b.^[2][1] In 2022, the inclination and true mass of HD 74156 c were measured via astrometry.^[3]

HD 74156 c

Discovery
Discovered by	Dominique Naef, Michel Mayor et al.[1]
Discovery site	California
Discovery date	Apr 4, 2001[2]
Detection method	Radial velocity
Orbital characteristics[3]
Semi-major axis	3.678+0.145 −0.159 AU
Eccentricity	0.377±0.006
Orbital period (sidereal)	2,448.5 ± 4.2 days (6.704 ± 0.011 a)
Inclination	120.162°+7.601° −66.225°
Longitude of ascending node	210.652°+7.606° −42.039°
Time of periastron	2448568.530+13.016 −11.742
Argument of periastron	271.934°+1.178° −1.505°
Semi-amplitude	113.940+0.974 −1.099 m/s
Star	HD 74156
Physical characteristics[3]
Mass	8.665+1.385 −0.470 MJ