(22260) Ur Main-belt Asteroid
Discovered on 19 October 1979 by A. Mrkos at Klet.
Ur was an important city of ancient southern Mesopotamia (Sumer), situated near the Euphrates River. The excavations at Ur discovered architectural monuments, including the ziggurat, and they greatly enlarged our knowledge of Mesopotamian history. The name was suggested by J. Ticha.Naming citation (20010509/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ur is today
Seen from above the solar system on 2026-10-14: Ur is 2.24 au from the Sun and 1.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 22260 |
| Provisional designation | 1979 UR |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.73 km (#5,255 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0390 |
| Absolute magnitude (H) | 14.42 |
| Orbital period | 4.30 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 2.24 – 3.04 au |
| Eccentricity | 0.151 |
| Inclination | 6.15° |
| Closest distance between its orbit and Earth's (MOID) | 1.24 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.