HD 190647 b is >1.9 MJ 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]
Discovery | |
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Discovered by | 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 |