(6073) Tahtiseuraursa Main-belt Asteroid
Discovered on 18 October 1939 by Y. Vaisala at Turku.
Tähtiseuraursa is Finnish for Astro Society Ursa. Ursa is a non-profit society of amateur astronomers, founded by Yrjö Väisälä in 1921. Ursa has grown to be one of the largest astronomical societies in Europe, with over 19 000 members in 2021.Naming citation (WGSBN Bull. 2, #5, 6), IAU / Minor Planet Center, via NASA/JPL
Where Tahtiseuraursa is today
Seen from above the solar system on 2026-10-14: Tahtiseuraursa is 2.77 au from the Sun and 3.56 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 6073 |
| Provisional designation | 1939 UB |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.85 km (#5,871 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.326 |
| Rotation period | 5.90 hours |
| Absolute magnitude (H) | 12.39 |
| Orbital period | 4.24 years |
| Semi-major axis | 2.62 au |
| Perihelion – aphelion | 2.28 – 2.96 au |
| Eccentricity | 0.129 |
| Inclination | 12.2° |
| Closest distance between its orbit and Earth's (MOID) | 1.34 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.