HD 195019 b

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HD 195019 b
Exoplanet List of exoplanets
Parent star
Star HD 195019
Constellation Delphinus
Right ascension (α) 20h 28m 18.6363s
Declination (δ) +18° 46′ 10.188″
Distance 65 ly
(20 pc)
Spectral type G3IV-V
Orbital elements
Semi-major axis (a) 0.1388 ± 0.008 AU
(20.76 Gm)
Periastron (q) 0.1369 AU
(20.48 Gm)
Apastron (Q) 0.1407 AU
(21.05 Gm)
Eccentricity (e) 0.014 ± 0.0044
Orbital period (P) 18.20163 ± 0.0004 d
(0.4983248 y)
Orbital speed (υ) 83.24 km/s
Argument of
(ω) 322 ± 20°
Time of periastron (T0) 2,411,015 ± 1.2 JD
Semi-amplitude (K) 272.3 ±1.4 m/s
Physical characteristics
Minimum mass (m sin i) 3.7 MJ
(1200 M)
Discovery information
Discovery date 1998
Discoverer(s) Fischer et al.[1]
Discovery method Radial Velocity
Discovery site Lick Observatory
Discovery status Published[1]
Database references
Extrasolar Planets
Exoplanet Archive data
Open Exoplanet Catalogue data

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]


  1. ^ a b c 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/9810420Freely accessible. Bibcode:1999PASP..111...50F. doi:10.1086/316304. 

External links[edit]

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