LP 791-18, an M(6.1 +/- 0.7) V star, has 3 confirmed planets.
Measured
Distance
about 86.4 light-years
Star's spectral type
M(6.1 +/- 0.7) V
Confirmed planets
3
How far, from the Sun
About 86.4 light-years. To cross it:
Light86.4 years
Voyager 1's speed1.54 million years
Driving at 100 km/h932 million 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 2019, by transit (NASA Exoplanet Archive).
Its planets
LP 791-18 b — 1.2 times Earth's width, about Earth-sized — probably rocky; its year lasts 23 hours; about 290 °C, hotter than boiling water; found in 2019 by transit.
LP 791-18 c — 2.5 times Earth's width, a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 5 days; about 51 °C, between freezing and boiling; found in 2019 by transit.
LP 791-18 d — 1 times Earth's width, about Earth-sized — probably rocky; its year lasts 3 days; about 120 °C, hotter than boiling water; found in 2023 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.