Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.
Facts
HIP 71135 b has an equilibrium temperature between −50 and +50 °C.
How it was found
First planet found in 2019, by radial velocity (NASA Exoplanet Archive).
Its planets
HIP 71135 b — 4.6 times Earth's width (estimated from its mass, not measured), Neptune-sized; its year lasts 87 days; about 12 °C, between freezing and boiling; found in 2019 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.