(10991) Dulov Main-belt Asteroid
Discovered on 14 September 1974 by N. S. Chernykh at Nauchnyj.
Professor Viktor Georgievich Dulov (1929-2001) was known for his work in theoretical gas dynamics and applied mathematics. He worked at Krasnoyarsk Computation Center, at Novosibirsk Institute of Theoretical and Applied Mechanics and at St. Petersburg University.Naming citation (20030501/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Dulov is today
Seen from above the solar system on 2026-10-14: Dulov is 2.89 au from the Sun and 3.40 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 10991 |
| Provisional designation | 1974 RY1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.25 km (#12,154 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.162 |
| Absolute magnitude (H) | 14.44 |
| Orbital period | 3.62 years |
| Semi-major axis | 2.36 au |
| Perihelion – aphelion | 1.82 – 2.89 au |
| Eccentricity | 0.227 |
| Inclination | 2.74° |
| Closest distance between its orbit and Earth's (MOID) | 0.809 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.