(4166) Pontryagin Main-belt Asteroid
Discovered on 26 September 1978 by L. V. Zhuravleva at Nauchnyj.
Where Pontryagin is today
Seen from above the solar system on 2026-10-14: Pontryagin is 2.60 au from the Sun and 3.46 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4166 |
| Provisional designation | 1978 SZ6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.01 km (#6,569 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.251 |
| Absolute magnitude (H) | 13.0 |
| Orbital period | 4.21 years |
| Semi-major axis | 2.61 au |
| Perihelion – aphelion | 2.53 – 2.69 au |
| Eccentricity | 0.0317 |
| Inclination | 3.11° |
| Closest distance between its orbit and Earth's (MOID) | 1.54 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 26 September 1978
- (2702) Batrakov
- (2771) Polzunov
- (2890) Vilyujsk
- (2978) Roudebush
- (3039) Yangel
- (3190) Aposhanskij
- (3410) Vereshchagin
- (3558) Shishkin
- (3586) Vasnetsov
- (3600) Archimedes
- (3655) Eupraksia
- (3657) Ermolova