(9933) Alekseev Main-belt Asteroid
Discovered on 19 September 1985 by Chernykh, N. S., Chernykh, L. I. at Nauchnyj.
Anatolij Semenovich Alekseev (b. 1928), a professor in the department of mathematical geophysics at Novosibirsk University, is a pioneer in the mathematical theory of geophysical processes and phenomena. He has been engaged in the mathematical modeling of the geophysical consequences of asteroidal impacts on the earth.Naming citation (20010309/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Alekseev is today
Seen from above the solar system on 2026-10-14: Alekseev is 1.86 au from the Sun and 0.903 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9933 |
| Provisional designation | 1985 SM3 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.49 km (#13,988 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.303 |
| Absolute magnitude (H) | 14.34 |
| Orbital period | 3.16 years |
| Semi-major axis | 2.15 au |
| Perihelion – aphelion | 1.85 – 2.46 au |
| Eccentricity | 0.141 |
| Inclination | 3.86° |
| Closest distance between its orbit and Earth's (MOID) | 0.858 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 19 September 1985
- (3986) Rozhkovskij
- (6232) Zubitskia
- (6589) Jankovich
- (9549) Akplatonov
- (9733) Valtikhonov
- (13922) Kremenia
- (16407) Oiunskij
- (24648) Evpatoria
- (24649) Balaklava