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TOI-4155 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TOI-4155 b

Confirmed exoplanet · Neptune Like

TOI-4155 b

Orbiting TOI-4155

Discovered in 2025 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-4155 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Transit
Radius: 3.21 R⊕
Mass: 10.4 M⊕
Orbit: 3.320729 days
Distance: 240.737 pc

Planet profile

Orbit and physical properties

Orbital period: 3.320729 days
Semi-major axis: Not reported by the NASA Exoplanet Archive
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 3.21 Earth radii
Mass: 10.4 Earth masses
Mass provenance: M-R relationship
Density: 1.73 g/cm³
Equilibrium temperature: 1,255 K
Insolation: 586.762 Earth flux

Host system

Star and system properties

Host star: TOI-4155
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 5,724 K
Stellar radius: 0.95 R☉
Stellar mass: 1.16 M☉
Stellar metallicity: 0.11 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 240.737 parsecs
Right ascension: 21h42m32.69s
Declination: +77d44m03.78s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,025
Publication date: 2025-09
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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