Astronomy:HD 195019 b

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Short description: Extrasolar planet in the constellation Delphinus
HD 195019 b
Discovery
Discovered byFischer et al.[1]
Discovery siteLick Observatory
Discovery date1998
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)
Eccentricity0.014 ± 0.0044
Orbital period18.20163 ± 0.0004 d
0.4983248 y
Average Orbital speed83.24
astron|astron|helion}}2,411,015 ± 1.2
322 ± 20
Semi-amplitude272.3 ±1.4
StarHD 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. 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. Bibcode1999PASP..111...50F. 

External links

Coordinates: Sky map 20h 28m 18.6363s, +18° 46′ 10.188″