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TIC 434398831 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/TIC 434398831 b

Confirmed exoplanet · Neptune Like

TIC 434398831 b

Orbiting TIC 434398831

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 TIC 434398831 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,025
Method: Transit
Radius: 3.51 R⊕
Mass: 12.1 M⊕
Orbit: 3.685504 days
Distance: 217.011 pc

Planet profile

Orbit and physical properties

Orbital period: 3.685504 days
Semi-major axis: 0.04641 AU
Eccentricity: 0.04
Radius: 3.51 Earth radii
Mass: 12.1 Earth masses
Mass provenance: M-R relationship
Density: 1.54 g/cm³
Equilibrium temperature: 1,250 K
Insolation: 333.6313 Earth flux

Host system

Star and system properties

Host star: TIC 434398831
Stars in system: 1
Known planets in system: 2
Spectral type: G4 V
Stellar temperature: 5,638 K
Stellar radius: 0.909 R☉
Stellar mass: 0.992 M☉
Stellar metallicity: -0.081 dex
Stellar age: 0.061 Gyr
Distance: 217.011 parsecs
Right ascension: 06h15m50.22s
Declination: +16d01m25.85s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,025
Publication date: 2025-06
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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