(1821) Aconcagua Main-belt Asteroid
Discovered on 24 June 1950 by M. Itzigsohn at La Plata.
Where Aconcagua is today
Seen from above the solar system on 2026-10-14: Aconcagua is 2.35 au from the Sun and 3.33 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1821 |
| Provisional designation | 1950 MB |
| Orbit class | Main-belt Asteroid |
| Rotation period | 2.76 hours |
| Absolute magnitude (H) | 13.28 |
| Orbital period | 3.67 years |
| Semi-major axis | 2.38 au |
| Perihelion – aphelion | 1.90 – 2.86 au |
| Eccentricity | 0.201 |
| Inclination | 2.10° |
| Closest distance between its orbit and Earth's (MOID) | 0.884 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.