(3754) Kathleen Main-belt Asteroid
Discovered on 16 March 1931 by C. W. Tombaugh at Flagstaff.
Where Kathleen is today
Seen from above the solar system on 2026-10-14: Kathleen is 2.84 au from the Sun and 3.55 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 3754 |
| Provisional designation | 1931 FM |
| Orbit class | Main-belt Asteroid |
| Diameter | 53.7 km (#672 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0610 |
| Rotation period | 11.2 hours |
| Absolute magnitude (H) | 10.5 |
| Orbital period | 5.63 years |
| Semi-major axis | 3.16 au |
| Perihelion – aphelion | 2.83 – 3.50 au |
| Eccentricity | 0.106 |
| Inclination | 8.45° |
| Closest distance between its orbit and Earth's (MOID) | 1.85 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.