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TOI-3278 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TOI-3278 b

Confirmed exoplanet · Gas Giant

TOI-3278 b

Orbiting TOI-3278

Discovered in 2026 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-3278 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,026
Method: Transit
Radius: 13.899136 R⊕
Mass: 95.348522 M⊕
Orbit: 3.246456 days
Distance: 904.752 pc

Planet profile

Orbit and physical properties

Orbital period: 3.246456 days
Semi-major axis: 0.043 AU
Eccentricity: 0
Radius: 13.899136 Earth radii
Mass: 95.348522 Earth masses
Mass provenance: Mass
Density: 0.21 g/cm³
Equilibrium temperature: 1,561 K
Insolation: 1,030 Earth flux

Host system

Star and system properties

Host star: TOI-3278
Stars in system: 1
Known planets in system: 1
Spectral type: G2-G4 V
Stellar temperature: 5,720 K
Stellar radius: 1.39 R☉
Stellar mass: 1.04 M☉
Stellar metallicity: 0.04 dex
Stellar age: 8.9 Gyr
Distance: 904.752 parsecs
Right ascension: 19h27m28.05s
Declination: -62d05m41.56s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,026
Publication date: 2026-08
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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