(1218) Aster Main-belt Asteroid
Discovered on 29 January 1932 by K. Reinmuth at Heidelberg.
👶 Aster as a baby name🐶 Aster as a dog name
Where Aster is today
Seen from above the solar system on 2026-10-14: Aster is 2.16 au from the Sun and 1.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1218 |
| Provisional designation | 1932 BJ |
| Orbit class | Main-belt Asteroid |
| Diameter | 5.55 km (#9,635 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.332 |
| Rotation period | 3.16 hours |
| Absolute magnitude (H) | 13.22 |
| Orbital period | 3.40 years |
| Semi-major axis | 2.26 au |
| Perihelion – aphelion | 2.02 – 2.51 au |
| Eccentricity | 0.109 |
| Inclination | 3.16° |
| Closest distance between its orbit and Earth's (MOID) | 1.03 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.