(2405) Welch Main-belt Asteroid
Discovered on 18 October 1963 by Indiana University at Brooklyn.
Where Welch is today
Seen from above the solar system on 2026-10-14: Welch is 3.44 au from the Sun and 2.51 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 2405 |
| Provisional designation | 1963 UF |
| Orbit class | Main-belt Asteroid |
| Diameter | 22.4 km (#1,926 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0520 |
| Rotation period | 14.3 hours |
| Spectral type | BCU: |
| Absolute magnitude (H) | 11.85 |
| Orbital period | 5.72 years |
| Semi-major axis | 3.20 au |
| Perihelion – aphelion | 2.74 – 3.65 au |
| Eccentricity | 0.142 |
| Inclination | 2.25° |
| Closest distance between its orbit and Earth's (MOID) | 1.76 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.