(4780) Polina Main-belt Asteroid
Discovered on 25 April 1979 by N. S. Chernykh at Nauchnyj.
Where Polina is today
Seen from above the solar system on 2026-10-14: Polina is 2.11 au from the Sun and 2.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4780 |
| Provisional designation | 1979 HE5 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.55 km (#13,819 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.423 |
| Rotation period | 3.49 hours |
| Absolute magnitude (H) | 14.37 |
| Orbital period | 3.20 years |
| Semi-major axis | 2.17 au |
| Perihelion – aphelion | 2.04 – 2.30 au |
| Eccentricity | 0.0601 |
| Inclination | 4.68° |
| Closest distance between its orbit and Earth's (MOID) | 1.03 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 25 April 1979
- (2656) Evenkia
- (3653) Klimishin
- (3885) Bogorodskij
- (4188) Kitezh
- (5456) Merman
- (5991) Ivavladis
- (13482) Igorfedorov