(2311) El Leoncito Outer Main-belt Asteroid
Discovered on 10 October 1974 by Felix Aguilar Observatory at El Leoncito.
Where El Leoncito is today
Seen from above the solar system on 2026-10-14: El Leoncito is 3.74 au from the Sun and 4.73 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2311 |
| Provisional designation | 1974 TA1 |
| Orbit class | Outer Main-belt Asteroid |
| Diameter | 53.1 km (#685 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0388 |
| Rotation period | 18.6 hours |
| Spectral type | D |
| Absolute magnitude (H) | 10.36 |
| Orbital period | 6.92 years |
| Semi-major axis | 3.63 au |
| Perihelion – aphelion | 3.45 – 3.81 au |
| Eccentricity | 0.0508 |
| Inclination | 6.60° |
| Closest distance between its orbit and Earth's (MOID) | 2.43 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.