Star with a known planet
HIP 4845
HIP 4845, a K7V star, has one confirmed planet.
Measured
- Distance
- about 68.8 light-years
- Star's spectral type
- K7V
- Confirmed planets
- 1
How far, from the Sun
About 68.8 light-years. To cross it:
- Light68.8 years
- Voyager 1's speed1.22 million years
- Driving at 100 km/h743 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 2020, by radial velocity (NASA Exoplanet Archive).
Its planets
- HIP 4845 b — 3.9 times Earth's width (estimated from its mass, not measured), a 'sub-Neptune' — bigger than Earth, smaller than Neptune; its year lasts 34 days; about 85 °C, between freezing and boiling; found in 2020 by radial velocity.
The NASA Exoplanet Archive's page
Where this comes from
- 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.
Every catalogue Ouranos draws is credited on the credits page.