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HD 222155 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 222155 b

Confirmed exoplanet · Gas Giant

HD 222155 b

Orbiting HD 222155

Discovered in 2011 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 222155 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Radial Velocity
Radius: 13.4 R⊕
Mass: 581.625985 M⊕
Orbit: 3,999 days
Distance: 50.6078 pc

Planet profile

Orbit and physical properties

Orbital period: 3,999 days
Semi-major axis: 5.14 AU
Eccentricity: 0.16
Radius: 13.4 Earth radii
Mass: 581.625985 Earth masses
Mass provenance: Mass
Density: 1.33 g/cm³
Equilibrium temperature: 164.93 K
Insolation: 0.1222 Earth flux

Host system

Star and system properties

Host star: HD 222155
Stars in system: 1
Known planets in system: 1
Spectral type: G2 V
Stellar temperature: 5,701 K
Stellar radius: 1.85 R☉
Stellar mass: 1.21 M☉
Stellar metallicity: -0.18 dex
Stellar age: 8.2 Gyr
Distance: 50.6078 parsecs
Right ascension: 23h38m00.61s
Declination: +48d59m45.67s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,011
Publication date: 2012-09
Discovery locale: Ground
Facility: Haute-Provence Observatory
Telescope: 1.93 m Telescope
Instrument: ELODIE Spectrograph
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from HD 222155 b.

Generic gas giant catalog artwork; not a direct image of HD 222155 b — Apex Andromeda catalog artwork