|Discovery date 16 September 2001|
Observation arc 12172 days (33.33 yr)
Discovered 16 September 2001
Discovery site Socorro
MPC designation 57424
|Alternative names 2001 SP22, 1982 BV4|
Orbital period 1,932 days
Asteroid group Asteroid belt
|Discovered by Lincoln Laboratory Near-Earth Asteroid Research Team|
Aphelion 3.3227002 AU (497.06887 Gm)
Perihelion 2.7480556 AU (411.10327 Gm)
Discoverer Lincoln Near-Earth Asteroid Research
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 programme which celebrated its 50th anniversary in 2007. The number 57424 refers to the date of the first broadcast, 24 April 1957.