HD 215497 c explained

HD 215497 c
Discoverer:Lo Curto et al.
Discovery Site:La Silla Observatory
Discovered:October 19, 2009
Discovery Method:Radial velocity (HARPS)
Apsis:astron
Semimajor:1.282AU
Eccentricity:0.49 ± 0.04
Period:567.94 ± 2.70 d
Time Periastron:2,455,003.48 ± 5.15
Arg Peri:45 ± 4
Semi-Amplitude:10.10 ± 0.65

HD 215497 c is an extrasolar planet which orbits the G-type main sequence star HD 215497, located approximately 142 light years away in the constellation Tucana. This planet has at least one-thirds the mass of Jupiter and takes 568 days to orbit the star at a semimajor axis of 1.282 AU. This planet was detected by HARPS on October 19, 2009, together with 29 other planets, including HD 215497 b.