(1447) Utra Main-belt Asteroid
Discovered on 26 January 1938 by Y. Vaisala at Turku.
Where Utra is today
Seen from above the solar system on 2026-10-14: Utra is 2.43 au from the Sun and 2.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1447 |
| Provisional designation | 1938 BB |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.8 km (#4,156 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.303 |
| Rotation period | 257 hours |
| Absolute magnitude (H) | 11.73 |
| Orbital period | 4.04 years |
| Semi-major axis | 2.53 au |
| Perihelion – aphelion | 2.43 – 2.64 au |
| Eccentricity | 0.0416 |
| Inclination | 4.78° |
| Closest distance between its orbit and Earth's (MOID) | 1.45 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.