(1397) Umtata Main-belt Asteroid
Discovered on 9 August 1936 by C. Jackson at Johannesburg.
Where Umtata is today
Seen from above the solar system on 2026-10-14: Umtata is 3.34 au from the Sun and 3.58 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1397 |
| Provisional designation | 1936 PG |
| Orbit class | Main-belt Asteroid |
| Diameter | 20.8 km (#2,104 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0840 |
| Rotation period | 30.0 hours |
| Absolute magnitude (H) | 11.41 |
| Orbital period | 4.40 years |
| Semi-major axis | 2.68 au |
| Perihelion – aphelion | 2.01 – 3.36 au |
| Eccentricity | 0.253 |
| Inclination | 3.51° |
| Closest distance between its orbit and Earth's (MOID) | 0.990 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.