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Missions Planets Black Holes 3D Map Agencies Blog About apexandromeda.com

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BD+20 274 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/BD+20 274 b

Confirmed exoplanet · Gas Giant

BD+20 274 b

Orbiting BD+20 274

Discovered in 2012 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 BD+20 274 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,012
Method: Radial Velocity
Radius: 13 R⊕
Mass: 1,334.886 M⊕
Orbit: 578.2 days
Distance: 1,322.51 pc

Planet profile

Orbit and physical properties

Orbital period: 578.2 days
Semi-major axis: 1.3 AU
Eccentricity: 0.21
Radius: 13 Earth radii
Mass: 1,334.886 Earth masses
Mass provenance: Msini
Density: 3.34 g/cm³
Equilibrium temperature: 755.7 K
Insolation: 53.9651 Earth flux

Host system

Star and system properties

Host star: BD+20 274
Stars in system: 1
Known planets in system: 1
Spectral type: K5 III
Stellar temperature: 4,296 K
Stellar radius: 17.3 R☉
Stellar mass: 0.8 M☉
Stellar metallicity: -0.46 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 1,322.51 parsecs
Right ascension: 01h43m40.88s
Declination: +21d00m18.97s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,012
Publication date: 2012-09
Discovery locale: Ground
Facility: McDonald Observatory
Telescope: 9.2 m Hobby-Eberly Telescope
Instrument: High Resolution Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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