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gam1 Leo b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/gam1 Leo b

Confirmed exoplanet · Gas Giant

gam1 Leo b

Orbiting gam1 Leo

Discovered in 2009 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic gas giant catalog artwork; not a direct image of gam1 Leo b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,009
Method: Radial Velocity
Radius: 12.5 R⊕
Mass: 2,790.43 M⊕
Orbit: 428.5 days
Distance: 39.8883 pc

Planet profile

Orbit and physical properties

Orbital period: 428.5 days
Semi-major axis: 1.19 AU
Eccentricity: 0.144
Radius: 12.5 Earth radii
Mass: 2,790.43 Earth masses
Mass provenance: Msini
Density: 7.85 g/cm³
Equilibrium temperature: 1,080.7 K
Insolation: 228.5105 Earth flux

Host system

Star and system properties

Host star: gam1 Leo
Stars in system: 2
Known planets in system: 1
Spectral type: K1 IIIb Fe-0.5
Stellar temperature: 4,330 K
Stellar radius: 31.88 R☉
Stellar mass: 1.23 M☉
Stellar metallicity: -0.51 dex
Stellar age: 2.412 Gyr
Distance: 39.8883 parsecs
Right ascension: 10h19m58.37s
Declination: +19d50m29.00s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,009
Publication date: 2010-01
Discovery locale: Ground
Facility: Bohyunsan Optical Astronomical Observatory
Telescope: 1.8 m Telescope
Instrument: BOES Echelle Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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