TIC 434398831, a G4 V star, has 2 confirmed planets.
Measured
Distance
about 708 light-years
Star's spectral type
G4 V
Confirmed planets
2
How far, from the Sun
About 708 light-years. To cross it:
Light708 years
Voyager 1's speed12.6 million years
Driving at 100 km/h7.64 billion years
Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.
How it was found
First planet found in 2025, by transit (NASA Exoplanet Archive).
Its planets
TIC 434398831 b — 3.5 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 4 days; about 980 °C, hotter than boiling water; found in 2025 by transit.
TIC 434398831 c — 5.6 times Earth's width, Neptune-sized; its year lasts 6 days; about 780 °C, hotter than boiling water; found in 2025 by transit.
NASA Exoplanet Archive, Planetary Systems Composite Parameters (fetched 2026-11-02). Composite values: where a planet's size or mass was not measured, the archive estimates it from the other.
This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with NASA under the Exoplanet Exploration Program.