MPC designation 1990 SS Discovered 25 September 1990 | Discovery date 25 September 1990 Alternative names MPO 196501 Observation arc 7504 days (20.54 yr) Absolute magnitude 18.5 | |
Discovery site Kitt Peak National Observatory People also search for 11311 Peleus, 38086 Beowulf | ||
11885 Summanus (also designated 1990 SS) is an asteroid that is a Near-Earth Object (NEO) and an Apollo asteroid.
Contents
Discovery and naming
11885 Summanus was discovered by Spacewatch on September 25, 1990, the first fully automatic discovery of a near-Earth asteroid. The name Summanus is symbolic of the discovery of the asteroid by software running on a (lightning-fast) computer.
Orbit
The orbit is well-established with over 20 years of observations. The closest approach to the Earth in the years 1900–2200 is 0.102 AU (15,300,000 km; 9,500,000 mi) on March 17, 1991, and March 17, 2011. For comparison, the distance to the Moon is about 0.0026 AU (390,000 km; 240,000 mi).
References
11885 Summanus Wikipedia(Text) CC BY-SA