HD 190647 b

HD 190647 b is >1.9 M_J planet orbiting the star HD 190647 at 309.7 gigameters or 10.04 μpc away from the star, taking 89.69 megaseconds to orbit the star with average velocity of 21.8 km/s. The orbital eccentricity is 18%. Dominique Naef discovered this planet in early 2007 by using HARPS spectrograph located in Chile.^[1]

HD 190647 b

Discovery
Discovered by	Dominique Naef et al.[1]
Discovery site	Chile
Discovery date	March 5, 2007
Detection method	HARPS
Orbital characteristics
Apastron	2.44 AU (365,000,000 km)
Periastron	1.70 AU (254,000,000 km)
Semi-major axis	2.07 ± 0.06 AU (309,700,000 ± 9,000,000 km)
Eccentricity	0.18 ± 0.02
Orbital period (sidereal)	1038.1 ± 5.1 d 2.8421 y
Average orbital speed	21.8
Time of periastron	2,453,868 ± 25
Argument of periastron	232.5 ± 9.6
Semi-amplitude	36.4 ± 1.2
Star	HD 190647
Physical characteristics
Mass	>1.9 MJ

See also

• HD 100777 b
• Pipitea (planet)