57424 Caelumnoctu
 Orbit of 57424 Caelumnoctu | |
| Discovery and designation | |
|---|---|
| Discovered by | Lincoln Laboratory Near-Earth Asteroid Research Team |
| Discovery site | Socorro |
| Discovery date | September 16, 2001 |
| Designations | |
| MPC designation | 57424 |
| 2001 SP22, 1982 BV4 | |
| Orbital characteristics | |
| Epoch January 4, 2010 | |
| Aphelion | 3.3169684 AU |
| Perihelion | 2.7576258 AU |
| 3.0383512 AU | |
| Eccentricity | 0.0920790 |
| 5.3 yr | |
| 171.65151° | |
| Inclination | 9.66971° |
| 353.52462° | |
| 47.55992° | |
| Proper orbital elements | |
Proper mean motion | 0.1861 deg / yr |
Proper orbital period |
1934.44385 yr (706555.615 d) |
| Physical characteristics | |
| 13.8 | |
|
| |
57424 Caelumnoctu (2001 SP22) is a main-belt asteroid discovered on September 16, 2001 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro, New Mexico.
It was named Caelumnoctu (Latin for The Sky at Night) in honour of the BBC television program which celebrated its 50th anniversary in 2007. The number 57424 refers to the date of the first broadcast, 24 April 1957.[1]
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