(2186) Keldysh Main-belt Asteroid
Discovered on 27 September 1973 by L. I. Chernykh at Nauchnyj.
Named in memory of Academician Mstislav Vsevolodovich Keldysh (1911-1978), famous Soviet scientist and mathematician who made a valuable contribution to space science and engineering. He was president of the U.S.S.R. Academy of Sciences from 1961 to 1975.Naming citation (MPC 5849), IAU / Minor Planet Center, via NASA/JPL
Where Keldysh is today
Seen from above the solar system on 2026-10-14: Keldysh is 2.41 au from the Sun and 1.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2186 |
| Provisional designation | 1973 SQ4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 12.8 km (#3,776 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.129 |
| Rotation period | 7.57 hours |
| Absolute magnitude (H) | 12.8 |
| Orbital period | 4.39 years |
| Semi-major axis | 2.68 au |
| Perihelion – aphelion | 2.41 – 2.95 au |
| Eccentricity | 0.100 |
| Inclination | 2.37° |
| Closest distance between its orbit and Earth's (MOID) | 1.42 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 27 September 1973
- (2008) Konstitutsiya
- (2129) Cosicosi
- (2205) Glinka
- (3127) Bagration
- (4304) Geichenko
- (4682) Bykov
- (6619) Kolya
- (9514) Deineka
- (24604) Vasilermakov