Astronomy:HD 195019 b
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Short description: Extrasolar planet in the constellation Delphinus
| Discovery | |
|---|---|
| Discovered by | Fischer et al.[1] |
| Discovery site | Lick Observatory |
| Discovery date | 1998 |
| Radial Velocity | |
| Orbital characteristics | |
| astron|astron|helion}} | 0.1407 AU (21,050,000 km) |
| astron|astron|helion}} | 0.1369 AU (20,480,000 km) |
| 0.1388 ± 0.008 AU (20,760,000 ± 1,200,000 km) | |
| Eccentricity | 0.014 ± 0.0044 |
| Orbital period | 18.20163 ± 0.0004 d 0.4983248 y |
| Average Orbital speed | 83.24 |
| astron|astron|helion}} | 2,411,015 ± 1.2 |
| 322 ± 20 | |
| Semi-amplitude | 272.3 ±1.4 |
| Star | HD 195019 |
HD 195019 b is an exoplanet orbiting around HD 195019 in the binary star system. It has a minimum mass of 3.7 MJ. It orbits very close to the star. Like many planets at close distance, its orbit is circular, even more circular or less eccentric than Earth. It takes 437 hours to orbit with velocity of 83.24 kilometers per second.[1]
See also
References
- ↑ 1.0 1.1 Fischer, Debra A. et al. (1999). "Planetary Companions around Two Solar-Type Stars: HD 195019 and HD 217107". Publications of the Astronomical Society of the Pacific 111 (755): 50–56. doi:10.1086/316304. Bibcode: 1999PASP..111...50F.
External links
Coordinates: 
20h 28m 18.6363s, +18° 46′ 10.188″
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