4 Ursae Majoris
Listed as 4 UMa in the NASA Exoplanet Archive.
4 Ursae Majoris is a K1 III star 240 light years away with 1 known planet. It was found in 2006.
Open in 3DPlanets
| Planet | Orbital period | Distance from star | Radius (Earths) | Mass (Earths) | Found | Method |
|---|---|---|---|---|---|---|
| 4 UMa b | 270.3 days | 0.877 AU | at least 2,511 | 2006 | Radial Velocity |
"At least" is a minimum mass. Radial velocity can only measure mass times the sine of the orbit's tilt.
Star
- Spectral type K1 III
- 4,415 K surface temperature
- 1.234 times the mass of the Sun
- 18.11 times the radius of the Sun
Data from the NASA Exoplanet Archive, as of October 3, 2026. In the 3D view sizes and distances are compressed and every orbit is drawn in the same plane. Where each planet sits along its orbit is made up.