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HAT-P-31 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/HAT-P-31 b

Confirmed exoplanet · Gas Giant

HAT-P-31 b

Orbiting HAT-P-31

Discovered in 2011 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 HAT-P-31 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,011
Method: Transit
Radius: 12.21781 R⊕
Mass: 721.4741 M⊕
Orbit: 5.00542 days
Distance: 344.05 pc

Planet profile

Orbit and physical properties

Orbital period: 5.00542 days
Semi-major axis: 0.061 AU
Eccentricity: 0.25
Radius: 12.21781 Earth radii
Mass: 721.4741 Earth masses
Mass provenance: Mass
Density: 2.18 g/cm³
Equilibrium temperature: 1,450 K
Insolation: 746.9025 Earth flux

Host system

Star and system properties

Host star: HAT-P-31
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 6,065 K
Stellar radius: 1.39 R☉
Stellar mass: 1.31 M☉
Stellar metallicity: 0.15 dex
Stellar age: 3.17 Gyr
Distance: 344.05 parsecs
Right ascension: 18h06m09.04s
Declination: +26d25m35.78s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,011
Publication date: 2011-09
Discovery locale: Ground
Facility: HATNet
Telescope: Canon 200mm f/1.8L
Instrument: 2K CCD Sensor
NASA Exoplanet Archive: Open composite record ↗

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