(11443) Youdale Main-belt Asteroid
Discovered on 11 February 1977 by E. Bowell at Palomar.
Jack Youdale (1932–2017) was a British amateur astronomer, telescope maker and public outreach advocate. He was Honorary President of the Cleveland and Darlington Astronomical Society from 1979 until his death, and he had a monthly astronomy slot on local radio for over 20 years.Naming citation (WGSBN Bull. 1, #1, 11), IAU / Minor Planet Center, via NASA/JPL
Where Youdale is today
Seen from above the solar system on 2026-10-14: Youdale is 2.08 au from the Sun and 3.07 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 11443 |
| Provisional designation | 1977 CP |
| Orbit class | Main-belt Asteroid |
| Diameter | 2.92 km (#15,398 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.394 |
| Rotation period | 3.37 hours |
| Absolute magnitude (H) | 14.69 |
| Orbital period | 3.51 years |
| Semi-major axis | 2.31 au |
| Perihelion – aphelion | 1.97 – 2.65 au |
| Eccentricity | 0.148 |
| Inclination | 1.07° |
| Closest distance between its orbit and Earth's (MOID) | 0.978 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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