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HD 221585 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 221585 b

Confirmed exoplanet · Gas Giant

HD 221585 b

Orbiting HD 221585

Discovered in 2016 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 221585 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,016
Method: Radial Velocity
Radius: 13.5 R⊕
Mass: 511.7063 M⊕
Orbit: 1,173 days
Distance: 55.8535 pc

Planet profile

Orbit and physical properties

Orbital period: 1,173 days
Semi-major axis: 2.306 AU
Eccentricity: 0.123
Radius: 13.5 Earth radii
Mass: 511.7063 Earth masses
Mass provenance: Msini
Density: 1.14 g/cm³
Equilibrium temperature: 242.77 K
Insolation: 0.4965 Earth flux

Host system

Star and system properties

Host star: HD 221585
Stars in system: 1
Known planets in system: 1
Spectral type: G8 IV
Stellar temperature: 5,620 K
Stellar radius: 1.850575 R☉
Stellar mass: 1.19 M☉
Stellar metallicity: 0.29 dex
Stellar age: 6.2 Gyr
Distance: 55.8535 parsecs
Right ascension: 23h32m55.05s
Declination: +63d09m20.21s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,016
Publication date: 2016-07
Discovery locale: Ground
Facility: Haute-Provence Observatory
Telescope: 1.93 m Telescope
Instrument: SOPHIE Spectrograph
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from HD 221585 b.

Generic gas giant catalog artwork; not a direct image of HD 221585 b — Apex Andromeda catalog artwork