(3781) Dufek Main-belt Asteroid
Discovered on 2 September 1986 by A. Mrkos at Klet.
Where Dufek is today
Seen from above the solar system on 2026-10-14: Dufek is 2.98 au from the Sun and 3.26 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3781 |
| Provisional designation | 1986 RG1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.27 km (#6,331 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.158 |
| Rotation period | 1,465 hours |
| Absolute magnitude (H) | 12.53 |
| Orbital period | 4.80 years |
| Semi-major axis | 2.85 au |
| Perihelion – aphelion | 2.64 – 3.05 au |
| Eccentricity | 0.0720 |
| Inclination | 2.05° |
| Closest distance between its orbit and Earth's (MOID) | 1.63 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 2 September 1986
More named asteroids discovered by A. Mrkos
- (2199) Klet
- (2304) Slavia
- (2325) Chernykh
- (2367) Praha
- (2403) Sumava
- (2404) Antarctica
- (2552) Remek
- (2559) Svoboda
- (2747) Cesky Krumlov
- (2811) Stremchovi
- (2889) Brno
- (2936) Nechvile
← (3780) Maury · (3782) Celle →