HD 195019 b is an
exoplanet
An exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not recognized as such. The first confirmation of detection occurred in 1992. A different planet, init ...
orbiting around HD 195019 in the
binary star
A binary star is a system of two stars that are gravitationally bound to and in orbit around each other. Binary stars in the night sky that are seen as a single object to the naked eye are often resolved using a telescope as separate stars, in wh ...
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
Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surfa ...
. It takes 437 hours to orbit with velocity of 83.24
kilometers per second
The metre per second is the unit of both speed (a scalar quantity) and velocity (a vector quantity, which has direction and magnitude) in the International System of Units (SI), equal to the speed of a body covering a distance of one metre in ...
.
See also
*
List of exoplanets discovered before 2000
References
External links
*
{{DEFAULTSORT:HD 195019 b
Exoplanets discovered in 1998
Giant planets
Delphinus
Exoplanets detected by radial velocity