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Gliese 86

Gliese 86 is a relatively close double of a yellow-orange star and a white dwarf. Star A has a planet with 4.02 times the mass of Jupiter in 0.11 AU distance which orbits the star every 15.766 days. This planet long ago survived the expansion of star B to a red giant. And the two stars seperation then was only 15 AU.

Constellation: Eridanus
Distance: 35.6 light-years
Age: 10 billion years
Space between Gliese 86 A and B: 21 AU
Orbit period of Gliese 86 A and B: 80 years

Gliese 86 A

Spectral class: K1
Visual magnitude: 6.17
Luminosity: 0.35 * Sun
Mass: 0.79 * Sun
Diameter: 0.86 * Sun
 

Gliese 86 B




Mass: 0.55 * Sun

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    Gliese 86
Gliese 86 A and the tiny B (to the left)
Photo: Eso

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