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TOI-257 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TOI-257 b

Confirmed exoplanet · Gas Giant

TOI-257 b

Orbiting TOI-257

Discovered in 2021 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 TOI-257 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,021
Method: Transit
Radius: 7.162539 R⊕
Mass: 43.86032 M⊕
Orbit: 18.38818 days
Distance: 76.9028 pc

Planet profile

Orbit and physical properties

Orbital period: 18.38818 days
Semi-major axis: 0.1528 AU
Eccentricity: 0
Radius: 7.162539 Earth radii
Mass: 43.86032 Earth masses
Mass provenance: Mass
Density: 0.65 g/cm³
Equilibrium temperature: 1,027 K
Insolation: 186 Earth flux

Host system

Star and system properties

Host star: TOI-257
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 6,095 K
Stellar radius: 1.867 R☉
Stellar mass: 1.407 M☉
Stellar metallicity: 0.175 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 76.9028 parsecs
Right ascension: 03h10m04.14s
Declination: -50d49m56.15s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,021
Publication date: 2021-04
Discovery locale: Space
Facility: Transiting Exoplanet Survey Satellite (TESS)
Telescope: 0.1 m TESS Telescope
Instrument: TESS CCD Array
NASA Exoplanet Archive: Open composite record ↗

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