HD 68988 c

HD 68988 c is an exoplanet located approximately 192 light-years away in the constellation of Ursa Major, orbiting the star HD 68988. The parameters including period and eccentricity are highly uncertain. The semimajor axis was initially believed to be 5.32 AU with an orbital period of 4100 ± 7300 days (11 years).^[2][3] The planetary orbit was significantly refined in 2021.^[1]

HD 68988 c

Discovery
Discovered by	Wright et al.
Discovery site	California, US
Discovery date	November 2006
Detection method	Radial velocity
Orbital characteristics
Semi-major axis	13.2 AU (1.97×109 km)[1]
Eccentricity	0.45+0.130 −0.081
Orbital period (sidereal)	16100+11000 −3500 d[1]
Average orbital speed	14
Time of periastron	2452730 ± 510
Argument of periastron	129
Semi-amplitude	60 ± 11
Star	HD 68988
Physical characteristics
Mass	15.0+2.8 −1.5MJ[1]

See also

• HD 68988 b