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HD 220773 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 220773 b

Confirmed exoplanet · Gas Giant

HD 220773 b

Orbiting HD 220773

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 220773 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Radial Velocity
Radius: 13.6 R⊕
Mass: 460.8 M⊕
Orbit: 3,724.7 days
Distance: 50.5103 pc

Planet profile

Orbit and physical properties

Orbital period: 3,724.7 days
Semi-major axis: 4.94 AU
Eccentricity: 0.51
Radius: 13.6 Earth radii
Mass: 460.8 Earth masses
Mass provenance: Msini
Density: 1.01 g/cm³
Equilibrium temperature: 167.02 K
Insolation: 0.129 Earth flux

Host system

Star and system properties

Host star: HD 220773
Stars in system: 1
Known planets in system: 1
Spectral type: F9
Stellar temperature: 5,940 K
Stellar radius: 1.679696 R☉
Stellar mass: 1.16 M☉
Stellar metallicity: 0.09 dex
Stellar age: 4.4 Gyr
Distance: 50.5103 parsecs
Right ascension: 23h26m27.47s
Declination: +08d38m34.39s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,011
Publication date: 2012-04
Discovery locale: Ground
Facility: McDonald Observatory
Telescope: 9.2 m Hobby-Eberly Telescope
Instrument: High Resolution Spectrograph
NASA Exoplanet Archive: Open composite record ↗

Visual archive

Gallery

One image from HD 220773 b.

Generic gas giant catalog artwork; not a direct image of HD 220773 b — Apex Andromeda catalog artwork