HD 171028 b

HD 171028 b is a >1.83 M_J exoplanet orbiting very eccentrically around HD 171028. The period is 1.47 years and semi-major axis of 1.29 AU. The Geneva Extrasolar Planet Search team announced the discovery of planet on July 13, 2007.

HD 171028 b

Discovery
Discovered by	Santos et al.
Discovery date	July 13, 2007
Detection method	Doppler spectroscopy
Orbital characteristics
Apastron	2.08 AU (311,000,000 km)
Periastron	0.50 AU (75,000,000 km)
Semi-major axis	1.29 AU (193,000,000 km)
Eccentricity	0.61
Orbital period (sidereal)	538±2 d 1.47 y
Average orbital speed	26.2
Time of periastron	2453648.92±1.89
Argument of periastron	305±1
Semi-amplitude	?
Star	HD 171028
Physical characteristics
Mass	>1.83 MJ