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HD 180902 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 180902 b

Confirmed exoplanet · Gas Giant

HD 180902 b

Orbiting HD 180902

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 HD 180902 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,009
Method: Radial Velocity
Radius: 13.5 R⊕
Mass: 535.54355 M⊕
Orbit: 510.9 days
Distance: 104.577 pc

Planet profile

Orbit and physical properties

Orbital period: 510.9 days
Semi-major axis: 1.4 AU
Eccentricity: 0.107
Radius: 13.5 Earth radii
Mass: 535.54355 Earth masses
Mass provenance: Msini
Density: 1.2 g/cm³
Equilibrium temperature: 412.37 K
Insolation: 4.7959 Earth flux

Host system

Star and system properties

Host star: HD 180902
Stars in system: 2
Known planets in system: 1
Spectral type: K0 III/IV
Stellar temperature: 4,961 K
Stellar radius: 4.16 R☉
Stellar mass: 1.41 M☉
Stellar metallicity: 0.04 dex
Stellar age: 2.8 Gyr
Distance: 104.577 parsecs
Right ascension: 19h19m17.75s
Declination: -23d33m29.68s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,009
Publication date: 2010-05
Discovery locale: Ground
Facility: W. M. Keck Observatory
Telescope: 10 m Keck I Telescope
Instrument: HIRES Spectrometer
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from HD 180902 b.

Generic gas giant catalog artwork; not a direct image of HD 180902 b — Apex Andromeda catalog artwork