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81 Cet b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/81 Cet b

Confirmed exoplanet · Gas Giant

81 Cet b

Orbiting 81 Cet

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 81 Cet b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,008
Method: Radial Velocity
Radius: 13.1 R⊕
Mass: 1,051.058542 M⊕
Orbit: 1,005.57 days
Distance: 101.26 pc

Planet profile

Orbit and physical properties

Orbital period: 1,005.57 days
Semi-major axis: 2.104 AU
Eccentricity: 0.037
Radius: 13.1 Earth radii
Mass: 1,051.058542 Earth masses
Mass provenance: Msini
Density: 2.57 g/cm³
Equilibrium temperature: 526.92 K
Insolation: 13.0071 Earth flux

Host system

Star and system properties

Host star: 81 Cet
Stars in system: 1
Known planets in system: 1
Spectral type: G5 III
Stellar temperature: 4,734 K
Stellar radius: 11.21 R☉
Stellar mass: 1.23 M☉
Stellar metallicity: -0.11 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 101.26 parsecs
Right ascension: 02h37m41.85s
Declination: -03d23m46.90s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,008
Publication date: 2008-12
Discovery locale: Ground
Facility: Okayama Astrophysical Observatory
Telescope: 1.88 m Telescope
Instrument: HIDES Echelle Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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