(4589) McDowell Main-belt Asteroid
Discovered on 24 July 1933 by K. Reinmuth at Heidelberg.
Where McDowell is today
Seen from above the solar system on 2026-10-14: McDowell is 2.89 au from the Sun and 3.75 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 4589 |
| Provisional designation | 1933 OB |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.37 km (#8,423 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.120 |
| Rotation period | 3.40 hours |
| Absolute magnitude (H) | 14.2 |
| Orbital period | 3.80 years |
| Semi-major axis | 2.44 au |
| Perihelion – aphelion | 1.98 – 2.89 au |
| Eccentricity | 0.187 |
| Inclination | 2.28° |
| Closest distance between its orbit and Earth's (MOID) | 0.974 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.