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HD 210277 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 210277 b

Confirmed exoplanet · Gas Giant

HD 210277 b

Orbiting HD 210277

Discovered in 1998 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 210277 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 1,998
Method: Radial Velocity
Radius: 13.6 R⊕
Mass: 410.0007 M⊕
Orbit: 442.19 days
Distance: 21.2985 pc

Planet profile

Orbit and physical properties

Orbital period: 442.19 days
Semi-major axis: 1.13 AU
Eccentricity: 0.48
Radius: 13.6 Earth radii
Mass: 410.0007 Earth masses
Mass provenance: Msini
Density: 0.896 g/cm³
Equilibrium temperature: 259.86 K
Insolation: 0.7275 Earth flux

Host system

Star and system properties

Host star: HD 210277
Stars in system: 1
Known planets in system: 1
Spectral type: G0 V
Stellar temperature: 5,538 K
Stellar radius: 1.07 R☉
Stellar mass: 1.01 M☉
Stellar metallicity: 0.22 dex
Stellar age: 12 Gyr
Distance: 21.2985 parsecs
Right ascension: 22h09m29.95s
Declination: -07d33m02.15s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 1,998
Publication date: 1999-07
Discovery locale: Ground
Facility: W. M. Keck Observatory
Telescope: 10 m Keck I Telescope
Instrument: HIRES Spectrometer
NASA Exoplanet Archive: Open composite record ↗

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