(1018) Arnolda Main-belt Asteroid
Discovered on 3 March 1924 by K. Reinmuth at Heidelberg.
Where Arnolda is today
Seen from above the solar system on 2026-10-14: Arnolda is 2.43 au from the Sun and 3.19 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 1018 |
| Provisional designation | A924 ET |
| Orbit class | Main-belt Asteroid |
| Diameter | 16.6 km (#2,776 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.371 |
| Rotation period | 14.6 hours |
| Absolute magnitude (H) | 11.06 |
| Orbital period | 4.05 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 1.92 – 3.16 au |
| Eccentricity | 0.245 |
| Inclination | 7.63° |
| Closest distance between its orbit and Earth's (MOID) | 0.910 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.