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TOI-3856 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TOI-3856 b

Confirmed exoplanet · Gas Giant

TOI-3856 b

Orbiting TOI-3856

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-3856 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Transit
Radius: 13.596494 R⊕
Mass: 171.62734 M⊕
Orbit: 2.043604 days
Distance: 314.443 pc

Planet profile

Orbit and physical properties

Orbital period: 2.043604 days
Semi-major axis: 0.0325 AU
Eccentricity: 0.083
Radius: 13.596494 Earth radii
Mass: 171.62734 Earth masses
Mass provenance: Mass
Density: 0.371 g/cm³
Equilibrium temperature: 1,544 K
Insolation: 949 Earth flux

Host system

Star and system properties

Host star: TOI-3856
Stars in system: 1
Known planets in system: 1
Spectral type: Not reported by the NASA Exoplanet Archive
Stellar temperature: 5,622 K
Stellar radius: 1.055 R☉
Stellar mass: 1.096 M☉
Stellar metallicity: 0.454 dex
Stellar age: 2.6 Gyr
Distance: 314.443 parsecs
Right ascension: 09h40m53.50s
Declination: +27d57m00.57s

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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