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TOI-4666 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TOI-4666 b

Confirmed exoplanet · Gas Giant

TOI-4666 b

Orbiting TOI-4666

Discovered in 2025 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-4666 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Transit
Radius: 12.53164 R⊕
Mass: 155.418091 M⊕
Orbit: 2.908917 days
Distance: 154.749 pc

Planet profile

Orbit and physical properties

Orbital period: 2.908917 days
Semi-major axis: 0.034 AU
Eccentricity: 0.023
Radius: 12.53164 Earth radii
Mass: 155.418091 Earth masses
Mass provenance: Mass
Density: 0.43 g/cm³
Equilibrium temperature: 695 K
Insolation: 55.6 Earth flux

Host system

Star and system properties

Host star: TOI-4666
Stars in system: 1
Known planets in system: 1
Spectral type: M2±0.5
Stellar temperature: 3,793 K
Stellar radius: 0.585 R☉
Stellar mass: 0.576 M☉
Stellar metallicity: 0.79 dex
Stellar age: 3 Gyr
Distance: 154.749 parsecs
Right ascension: 03h45m09.57s
Declination: -39d03m47.45s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,025
Publication date: 2026-03
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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