(243381) Alessio Main-belt Asteroid
Discovered on 22 December 2008 by Muler, G., Ruiz, J. M. at Nazaret.
Alessio Muler (b. 2002), second son of the first discoverer, shares with his father a passion for the skies.Naming citation (20100923/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Alessio is today
Seen from above the solar system on 2026-10-14: Alessio is 2.83 au from the Sun and 2.53 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 243381 |
| Provisional designation | 2008 YM4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.87 km (#17,173 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.242 |
| Absolute magnitude (H) | 15.94 |
| Orbital period | 3.58 years |
| Semi-major axis | 2.34 au |
| Perihelion – aphelion | 1.82 – 2.86 au |
| Eccentricity | 0.222 |
| Inclination | 24.1° |
| Closest distance between its orbit and Earth's (MOID) | 0.824 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.