Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.
Facts
GJ 414 A b has an equilibrium temperature between −50 and +50 °C.
How it was found
First planet found in 2021, by radial velocity (NASA Exoplanet Archive).
Its planets
GJ 414 A b — 2.6 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 51 days; about 36 °C, between freezing and boiling; found in 2021 by radial velocity.
GJ 414 A c — 8.4 times Earth's width, Neptune-sized; its year lasts about 2 Earth years; about −150 °C, below freezing; found in 2021 by radial velocity.
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.