HD 195019 b

HD 195019 b

Discovery
Discovered by	Fischer et al.[1]
Discovery site	Lick Observatory
Discovery date	1998
Detection method	Radial Velocity
Orbital characteristics
Apastron	0.1407 AU (21,050,000 km)
Periastron	0.1369 AU (20,480,000 km)
Semi-major axis	0.1388 ± 0.008 AU (20,760,000 ± 1,200,000 km)
Eccentricity	0.014 ± 0.0044
Orbital period (sidereal)	18.20163 ± 0.0004 d 0.4983248 y
Average orbital speed	83.24
Time of periastron	2,411,015 ± 1.2
Argument of periastron	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 M_J. 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

• List of exoplanets discovered before 2000

References

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. arXiv:astro-ph/9810420. Bibcode:1999PASP..111...50F. doi:10.1086/316304. S2CID 17980987.

External links

• "HD 195019". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-11-01.