Gliese 317 b
Encyclopedia
Gliese 317 b is an extrasolar planet
approximately 50 light-year
s away in the constellation
of Pyxis
. The planet was announced in July 2007 to be orbiting the red dwarf
star
Gliese 317
. The planet is a jovian planet that orbits about 95% the distance
between Earth to the Sun
. Despite of this, it takes about 1.9 years, corresponding to slow orbital velocity
of 14.82 km/s.
Extrasolar planet
An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars...
approximately 50 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...
s away in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
of Pyxis
Pyxis
Pyxis is a small and faint constellation in the southern sky. Its name is Latin for a mariner's compass...
. The planet was announced in July 2007 to be orbiting the red dwarf
Red dwarf
According to the Hertzsprung-Russell diagram, a red dwarf star is a small and relatively cool star, of the main sequence, either late K or M spectral type....
star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
Gliese 317
Gliese 317
Gliese 317 is a red dwarf star approximately 50 light-years away in the constellation of Pyxis. The star has an apparent magnitude of 12, an absolute magnitude of 12.2, and corresponding to visual luminosity of 0.1% Sun...
. The planet is a jovian planet that orbits about 95% the distance
Distance
Distance is a numerical description of how far apart objects are. In physics or everyday discussion, distance may refer to a physical length, or an estimation based on other criteria . In mathematics, a distance function or metric is a generalization of the concept of physical distance...
between Earth to the Sun
Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...
. Despite of this, it takes about 1.9 years, corresponding to slow orbital velocity
Orbital velocity
Orbital velocity can refer to the following:* The orbital speed of a body in a gravitational field.* The velocity of particles due to wave motion, in particular in wind waves....
of 14.82 km/s.