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HD 187123 c | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 187123 c

Confirmed exoplanet · Gas Giant

HD 187123 c

Orbiting HD 187123

Discovered in 2008 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 HD 187123 c — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,008
Method: Radial Velocity
Radius: 13.2 R⊕
Mass: 912.167528 M⊕
Orbit: 3,810 days
Distance: 45.9548 pc

Planet profile

Orbit and physical properties

Orbital period: 3,810 days
Semi-major axis: 4.89 AU
Eccentricity: 0.252
Radius: 13.2 Earth radii
Mass: 912.167528 Earth masses
Mass provenance: Mass
Density: 2.18 g/cm³
Equilibrium temperature: 135.42 K
Insolation: 0.056 Earth flux

Host system

Star and system properties

Host star: HD 187123
Stars in system: 1
Known planets in system: 2
Spectral type: G3 V
Stellar temperature: 5,790 K
Stellar radius: 1.15043 R☉
Stellar mass: 1.04 M☉
Stellar metallicity: 0.09 dex
Stellar age: 7.4 Gyr
Distance: 45.9548 parsecs
Right ascension: 19h46m58.29s
Declination: +34d25m08.36s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,008
Publication date: 2009-03
Discovery locale: Ground
Facility: W. M. Keck Observatory
Telescope: 10 m Keck I Telescope
Instrument: HIRES Spectrometer
NASA Exoplanet Archive: Open composite record ↗

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