(12931) Mario Main-belt Asteroid
Discovered on 7 October 1999 by S. Sposetti at Gnosca.
Mario Sposetti (1916-1959) was the father of the discoverer.Naming citation (20000523/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
👶 Mario as a baby name🐶 Mario as a dog name
Where Mario is today
Seen from above the solar system on 2026-10-14: Mario is 2.70 au from the Sun and 1.91 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12931 |
| Provisional designation | 1999 TX10 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.62 km (#11,400 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.301 |
| Absolute magnitude (H) | 14.07 |
| Orbital period | 4.47 years |
| Semi-major axis | 2.71 au |
| Perihelion – aphelion | 2.69 – 2.73 au |
| Eccentricity | 0.00687 |
| Inclination | 3.39° |
| Closest distance between its orbit and Earth's (MOID) | 1.71 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 7 October 1999
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