HD 23127 b is a jovian extrasolar planet orbiting the star HD 23127 at the distance of 2.29 AU, taking 3.32 years to orbit. The orbit is very eccentric, a so-called "eccentric Jupiter". At periastron, the distance is 1.28 AU, and at apastron, the distance is 3.30 AU. The mass is at least 1.37 times Jupiter. Only the minimum mass is known because the inclination is not known.^[1]

HD 23127 b

Discovery
Discovered by	O'Toole et al.
Discovery site	Australia
Discovery date	February 9, 2007
Detection method	radial velocity
Orbital characteristics
Semi-major axis	2.29 AU (343,000,000 km)
Eccentricity	0.44 ± 0.07
Orbital period (sidereal)	1214 ± 9 d 3.32 y
Time of periastron	2,400,229 ± 19
Argument of periastron	190 ± 6
Semi-amplitude	27.5 ± 1
Star	HD 23127