(4503) Cleobulus Amor
Discovered on 28 November 1989 by C. S. Shoemaker at Palomar.
Where Cleobulus is today
Seen from above the solar system on 2026-10-14: Cleobulus is 3.33 au from the Sun and 3.88 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4503 |
| Provisional designation | 1989 WM |
| Orbit class | Amor · near-Earth |
| Rotation period | 2.82 hours |
| Spectral type | Sq |
| Absolute magnitude (H) | 15.82 |
| Orbital period | 4.45 years |
| Semi-major axis | 2.70 au |
| Perihelion – aphelion | 1.29 – 4.12 au |
| Eccentricity | 0.525 |
| Inclination | 2.51° |
| Closest distance between its orbit and Earth's (MOID) | 0.305 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.