(2857) NOT Main-belt Asteroid
Discovered on 17 February 1942 by L. Oterma at Turku.
Where NOT is today
Seen from above the solar system on 2026-10-14: NOT is 2.34 au from the Sun and 1.47 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2857 |
| Provisional designation | 1942 DA |
| Orbit class | Main-belt Asteroid |
| Diameter | 9.31 km (#5,537 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.169 |
| Rotation period | 5.64 hours |
| Spectral type | T |
| Absolute magnitude (H) | 12.65 |
| Orbital period | 3.72 years |
| Semi-major axis | 2.40 au |
| Perihelion – aphelion | 2.17 – 2.63 au |
| Eccentricity | 0.0940 |
| Inclination | 5.73° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.