(12222) Perotto Main-belt Asteroid
Discovered on 19 November 1982 by Osservatorio San Vittore at Bologna.
Pier Giorgio Perotto (1930-2002) was an Italian electronics engineer. An employee at Olivetti, in 1964 he invented the world's first desktop programmable electronic calculator, known variously as “Programma 101” and “Perottina”.Naming citation (20020427/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Perotto is today
Seen from above the solar system on 2026-10-14: Perotto is 2.79 au from the Sun and 3.72 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 12222 |
| Provisional designation | 1982 WA |
| Orbit class | Main-belt Asteroid |
| Diameter | 8.74 km (#5,964 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0480 |
| Absolute magnitude (H) | 13.81 |
| Orbital period | 4.23 years |
| Semi-major axis | 2.62 au |
| Perihelion – aphelion | 2.13 – 3.10 au |
| Eccentricity | 0.185 |
| Inclination | 10.8° |
| Closest distance between its orbit and Earth's (MOID) | 1.16 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Pier
All asteroids named after someone called Pier