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KELT-20 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/KELT-20 b

Confirmed exoplanet · Gas Giant

KELT-20 b

Orbiting KELT-20

Discovered in 2017 using Transit. 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 KELT-20 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,017
Method: Transit
Radius: 19.514869 R⊕
Mass: 1,074.90106 M⊕
Orbit: 3.474109 days
Distance: 136.426 pc

Planet profile

Orbit and physical properties

Orbital period: 3.474109 days
Semi-major axis: 0.0542 AU
Eccentricity: 0
Radius: 19.514869 Earth radii
Mass: 1,074.90106 Earth masses
Mass provenance: Mass
Density: 0.806 g/cm³
Equilibrium temperature: 2,262 K
Insolation: 4,362.5 Earth flux

Host system

Star and system properties

Host star: KELT-20
Stars in system: 1
Known planets in system: 1
Spectral type: A2 V
Stellar temperature: 8,720 K
Stellar radius: 1.565 R☉
Stellar mass: 1.76 M☉
Stellar metallicity: -0.29 dex
Stellar age: 0.6 Gyr
Distance: 136.426 parsecs
Right ascension: 19h38m38.74s
Declination: +31d13m09.12s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,017
Publication date: 2017-11
Discovery locale: Ground
Facility: KELT-North
Telescope: Mamiya 645 80mm f/1.9
Instrument: Apogee 4K CCD Sensor
NASA Exoplanet Archive: Open composite record ↗

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