HD 27894 b

HD 27894 b is a gas giant with a mass at least two thirds that of Jupiter, or twice that of Saturn. The distance from the planet to the star is one third compared that of Mercury from the Sun, and it takes almost exactly 18 days to complete one roughly circular orbit.^[1]

HD 27894 b

Discovery
Discovered by	Moutou, Mayor, Bouchy et al.
Discovery date	15 Feb 2005
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	0.1221 ± 0.0071 AU (18,270,000 ± 1,060,000 km)
Eccentricity	0.049±0.08
Orbital period (sidereal)	17.991±0.007 d
Time of periastron	2,453,275.46±0.48
Argument of periastron	132.9±9.7
Semi-amplitude	58.1±0.5
Star	HD 27894
Physical characteristics
Mass	>0.618±0.088 MJ (>196 M🜨)