(1191) Alfaterna Main-belt Asteroid
Discovered on 11 February 1931 by L. Volta at Pino Torinese.
Where Alfaterna is today
Seen from above the solar system on 2026-10-14: Alfaterna is 2.97 au from the Sun and 2.67 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1191 |
| Provisional designation | 1931 CA |
| Orbit class | Main-belt Asteroid |
| Diameter | 47.4 km (#806 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0450 |
| Rotation period | 194 hours |
| Absolute magnitude (H) | 10.78 |
| Orbital period | 4.92 years |
| Semi-major axis | 2.89 au |
| Perihelion – aphelion | 2.75 – 3.03 au |
| Eccentricity | 0.0489 |
| Inclination | 18.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.80 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by L. Volta
← (1190) Pelagia · (1192) Prisma →