(2129) Cosicosi Main-belt Asteroid
Discovered on 27 September 1973 by P. Wild at Zimmerwald.
The Italian characterization of indifference.Naming citation (MPC 5359), IAU / Minor Planet Center, via NASA/JPL
Where Cosicosi is today
Seen from above the solar system on 2026-10-14: Cosicosi is 2.54 au from the Sun and 3.51 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2129 |
| Provisional designation | 1973 SJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.90 km (#15,443 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.322 |
| Rotation period | 91.1 hours |
| Absolute magnitude (H) | 14.67 |
| Orbital period | 3.22 years |
| Semi-major axis | 2.18 au |
| Perihelion – aphelion | 1.80 – 2.56 au |
| Eccentricity | 0.174 |
| Inclination | 5.52° |
| Closest distance between its orbit and Earth's (MOID) | 0.808 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 27 September 1973
- (2008) Konstitutsiya
- (2186) Keldysh
- (2205) Glinka
- (3127) Bagration
- (4304) Geichenko
- (4682) Bykov
- (6619) Kolya
- (9514) Deineka
- (24604) Vasilermakov