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 2019, by transit (NASA Exoplanet Archive).
Its planets
V1298 Tau b — 9.4 times Earth's width, Neptune-sized; its year lasts 24 days; about 390 °C, hotter than boiling water; found in 2019 by transit.
V1298 Tau c — 5.1 times Earth's width, Neptune-sized; its year lasts 8 days; about 680 °C, hotter than boiling water; found in 2019 by transit.
V1298 Tau d — 6.5 times Earth's width, Neptune-sized; its year lasts 12 days; about 560 °C, hotter than boiling water; found in 2019 by transit.
V1298 Tau e — 10 times Earth's width, a giant, Jupiter-sized or more; its year lasts 49 days; about 250 °C, hotter than boiling water; found in 2019 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.