HD 87883 b
Encyclopedia
HD 87883 b is an extrasolar planet
which orbits the K-type main sequence
star
HD 87883
, located approximately 59 light years away in the constellation
Leo Minor
. It is a long-period planet, taking seven and a half years to orbit the star at the average distance of 3.60 AU
. However this planet orbits in a very eccentric path, which ranges distance from as close as 1.69 AU to as far as 5.51 AU. This planet was detected by radial velocity method on August 13, 2009.
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...
which orbits the K-type main sequence
Main sequence
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar Hertzsprung and Henry Norris Russell...
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...
HD 87883
HD 87883
HD 87883 is an 8th magnitude K-type main sequence star located approximately 59 light years away in the constellation Leo Minor. The age of this star is 9.8 billion years, compared with 4.6 billion years for our Sun. In August 2009, this star was found to have a radial velocity planet.-References:...
, located approximately 59 light years 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....
Leo Minor
Leo Minor
Leo Minor is a small and faint constellation. Its name means "the smaller lion", in contrast to Leo, the larger lion. Its brightest stars form a rough triangle, and it lies between the larger and more recognizable Ursa Major and Leo...
. It is a long-period planet, taking seven and a half years to orbit the star at the average distance of 3.60 AU
Astronomical unit
An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance....
. However this planet orbits in a very eccentric path, which ranges distance from as close as 1.69 AU to as far as 5.51 AU. This planet was detected by radial velocity method on August 13, 2009.