HD 10647 b

HD 10647 b, also catalogued as q¹ Eridani b, is an extrasolar planet approximately 57 light-years away in the constellation of Eridanus (the River). The planet is a mid-Jovian that orbits 103% farther from the star than Earth to the Sun. It takes about 33 months to orbit with semi-amplitude of 17.9 m/s.^[1]

HD 10647 b

Discovery
Discovered by	Mayor et al.
Discovery site	Paris, France
Discovery date	30 June 2003
Detection method	Doppler Spectroscopy
Orbital characteristics
Apastron	1.712 AU
Periastron	2.317 AU
Semi-major axis	2.03 ± 0.15 AU (304,000,000 ± 22,000,000 km)
Eccentricity	0.16 ± 0.22
Orbital period (sidereal)	1003 ± 56 d
Average orbital speed	22.05 km/s 21.91 km/s
Time of periastron	2452261 ± 47
Argument of periastron	68 ± 17
Semi-amplitude	17.9 ± 4.6
Star	HD 10647
Physical characteristics
Mass	0.93 MJ

See also

• 51 Pegasi b
• 91 Aquarii b
• 109 Piscium b
• Epsilon Eridani b