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Proper NameNone
DesignationsAlgieba b, Algieba A b, Gamma Leonis b, Gamma1 Leonis b
ClassificationGas Giant
Orbital Period428.5 days
Mean Distance from Algieba178 million km
1.19 AU
Mass8.8 x Jupiter
DiameterNot known
TemperatureNot known
Parent starAlgieba (Gamma1 Leonis), orange giant star in Leo
Other planets in this system Algieba c (Gamma1 Leonis c), unconfirmed gas giant
NotesThis gas giant planet has an extraordinarily high mass, nearly nine times that of Jupiter. It orbits Algieba A, an orange giant star that forms part of the binary Algieba system in Leo, at a distance only slightly greater than that from the Sun to Earth.
The orbits of planets in the Algieba A system The orbits of planets in the Algieba A system

The massive planet Algieba b follows an orbit around its orange parent star that is comparable in distance to that of Earth from the Sun, though rather more eccentric. There is potentially a less massive second planet in the system, designated Algieba c, though the existence of this planet has yet be confirmed. The central star shown here, Algieba A, is part of a binary system, with a companion that also has a highly eccentric orbit, but averages a distance of about 170 AU from the primary (or about 140 times the distance of the planet Algieba b from its star).

Imagery provided by Aladin sky atlas


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