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WASP-138 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/WASP-138 b

Confirmed exoplanet · Gas Giant

WASP-138 b

Orbiting WASP-138

Discovered in 2016 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 WASP-138 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,016
Method: Transit
Radius: 12.21781 R⊕
Mass: 387.7526 M⊕
Orbit: 3.634433 days
Distance: 414.234 pc

Planet profile

Orbit and physical properties

Orbital period: 3.634433 days
Semi-major axis: 0.0494 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 12.21781 Earth radii
Mass: 387.7526 Earth masses
Mass provenance: Mass
Density: 1.2 g/cm³
Equilibrium temperature: 1,590 K
Insolation: 1,133.73 Earth flux

Host system

Star and system properties

Host star: WASP-138
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 6,272 K
Stellar radius: 1.36 R☉
Stellar mass: 1.22 M☉
Stellar metallicity: -0.09 dex
Stellar age: 3.44 Gyr
Distance: 414.234 parsecs
Right ascension: 02h46m33.40s
Declination: -00d27m50.85s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,016
Publication date: 2017-03
Discovery locale: Ground
Facility: SuperWASP
Telescope: Canon 200mm f/1.8L
Instrument: iKon-L CCD Camera
NASA Exoplanet Archive: Open composite record ↗

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