HD 195019 is a Sun-like star in the constellation Delphinus around which has been found a three-Jupiter-mass exoplanets of the epistellar Jovian type.1 Spectroscopic measurements of the host suggest that it is has a "quiet" chromosphere (an important factor in its suitability to support nearby life) and a metal-content somewhat greater than that of the Sun.
|Distance||65.3 light-years (20 pc)|
|Spectral type||G3 IV-V|
|Temperature||5,330°C (5,799 K)|
|Mass (Jupiter=1)||3.43 ± 0.4|
|Semi-major axis||0.14 AU (21 million km, 13 million miles)|
|Orbital period||18.3 ± 0.2 days|
|Eccentricity||0.05 ± 0.04|
|Discovery||1998 by Marcy et al., Lick and Keck Obs.|
1. Fischer, D., Marcy, G., Butler, P., Vogt, S., and Apps, K. , 1998. "Planetary companions around two solar type stars: HD 195019 and HD 217107," PASP, 111, 50.