23 Librae c
Encyclopedia
23 Librae c is an extrasolar planet
like Jupiter
discovered in 2009 orbiting the star 23 Librae
. It has one of the longest known orbits of a planet detected via radial velocity. The actual orbital period of this planet range from 4600 to 5400 days, or from 12.5 to 15 years. The reason why the error range for orbital period is so large because this planet did not complete the orbit during the time of continuous observations. Using the range of orbital periods, this planet's average distance would sit between 5.3 and 6.3 AU, or between 790 and 940 Gm.
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...
like Jupiter
Jupiter
Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. It is a gas giant with mass one-thousandth that of the Sun but is two and a half times the mass of all the other planets in our Solar System combined. Jupiter is classified as a gas giant along with Saturn,...
discovered in 2009 orbiting the star 23 Librae
23 Librae
23 Librae is a yellow dwarf star in the constellation Libra, and is about 83.7 light-years from the Sun. 23 Lib has a mass of 1.05 suns and a radius of 1.25 suns...
. It has one of the longest known orbits of a planet detected via radial velocity. The actual orbital period of this planet range from 4600 to 5400 days, or from 12.5 to 15 years. The reason why the error range for orbital period is so large because this planet did not complete the orbit during the time of continuous observations. Using the range of orbital periods, this planet's average distance would sit between 5.3 and 6.3 AU, or between 790 and 940 Gm.