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TOI-205 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TOI-205 b

Confirmed exoplanet · Neptune Like

TOI-205 b

Orbiting TOI-205

Discovered in 2026 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-205 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,026
Method: Transit
Radius: 2.501211 R⊕
Mass: 6.81 M⊕
Orbit: 4.253008 days
Distance: 177.759 pc

Planet profile

Orbit and physical properties

Orbital period: 4.253008 days
Semi-major axis: Not reported by the NASA Exoplanet Archive
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 2.501211 Earth radii
Mass: 6.81 Earth masses
Mass provenance: M-R relationship
Density: 2.39 g/cm³
Equilibrium temperature: 1,799.55 K
Insolation: 1,740.9224 Earth flux

Host system

Star and system properties

Host star: TOI-205
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 6,302.74 K
Stellar radius: 1.45382 R☉
Stellar mass: 1.2 M☉
Stellar metallicity: 0.13 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 177.759 parsecs
Right ascension: 00h31m54.11s
Declination: -56d57m54.29s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,026
Publication date: 2026-05
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 ↗

Visual archive

Gallery

One image from TOI-205 b.

Generic neptune like catalog artwork; not a direct image of TOI-205 b — Apex Andromeda catalog artwork