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HD 20794 e | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HD 20794 e

Confirmed exoplanet · Super Earth

HD 20794 e

Orbiting HD 20794

Discovered in 2017 using Radial Velocity. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic super earth catalog artwork; not a direct image of HD 20794 e — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,017
Method: Radial Velocity
Radius: 2.03 R⊕
Mass: 4.77 M⊕
Orbit: 147.02 days
Distance: 6.00278 pc

Planet profile

Orbit and physical properties

Orbital period: 147.02 days
Semi-major axis: 0.509 AU
Eccentricity: 0.29
Radius: 2.03 Earth radii
Mass: 4.77 Earth masses
Mass provenance: Msini
Density: 3.13 g/cm³
Equilibrium temperature: 352.04 K
Insolation: 2.6513 Earth flux

Host system

Star and system properties

Host star: HD 20794
Stars in system: 1
Known planets in system: 4
Spectral type: G8
Stellar temperature: 5,401 K
Stellar radius: 0.93 R☉
Stellar mass: 0.813 M☉
Stellar metallicity: -0.4 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: 2,017
Publication date: 2017-09
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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