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TOI-251 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TOI-251 b

Confirmed exoplanet · Neptune Like

TOI-251 b

Orbiting TOI-251

Discovered in 2021 using Transit. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic neptune like catalog artwork; not a direct image of TOI-251 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,021
Method: Transit
Radius: 2.74 R⊕
Mass: 317.83 M⊕
Orbit: 4.93777 days
Distance: 99.523 pc

Planet profile

Orbit and physical properties

Orbital period: 4.93777 days
Semi-major axis: 0.05741 AU
Eccentricity: 0
Radius: 2.74 Earth radii
Mass: 317.83 Earth masses
Mass provenance: Mass
Density: Not reported by the NASA Exoplanet Archive
Equilibrium temperature: 1,041.19 K
Insolation: 277.7462 Earth flux

Host system

Star and system properties

Host star: TOI-251
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 5,875 K
Stellar radius: 0.881 R☉
Stellar mass: 1.036 M☉
Stellar metallicity: -0.106 dex
Stellar age: 0.18 Gyr
Distance: 99.523 parsecs
Right ascension: 23h32m14.90s
Declination: -37d15m21.11s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,021
Publication date: 2021-01
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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