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HD 20794 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 20794 b

Confirmed exoplanet · Terrestrial

HD 20794 b

Orbiting HD 20794

Discovered in 2011 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic terrestrial catalog artwork; not a direct image of HD 20794 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Radial Velocity
Radius: 1.45 R⊕
Mass: 2.7 M⊕
Orbit: 18.314 days
Distance: 6.00278 pc

Planet profile

Orbit and physical properties

Orbital period: 18.314 days
Semi-major axis: 0.1257 AU
Eccentricity: 0.064
Radius: 1.45 Earth radii
Mass: 2.7 Earth masses
Mass provenance: Msin(i)/sin(i)
Density: 4.87 g/cm³
Equilibrium temperature: 660 K
Insolation: 43.4733 Earth flux

Host system

Star and system properties

Host star: HD 20794
Stars in system: 1
Known planets in system: 4
Spectral type: G6 V
Stellar temperature: 5,368 K
Stellar radius: 0.93 R☉
Stellar mass: 0.79 M☉
Stellar metallicity: -0.42 dex
Stellar age: 5.76 Gyr
Distance: 6.00278 parsecs
Right ascension: 03h19m59.94s
Declination: -43d03m59.95s

Discovery

Detection and provenance

Discovery method: Radial Velocity
Discovery year: 2,011
Publication date: 2011-10
Discovery locale: Ground
Facility: La Silla Observatory
Telescope: 3.6 m ESO Telescope
Instrument: HARPS Spectrograph
NASA Exoplanet Archive: Open composite record ↗

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