| June 12, 1999|
409 days (1.12 yr)
4.3386 AU (649.05 Gm)
11.939 AU (1.7860 Tm)
12 June 1999
| Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro|
Lincoln Near-Earth Asteroid Research
Solar System, 2000 DG8, 20461 Dioretsa
1999 LE31 is a damocloid centaur discovered on June 12, 1999. It is both a Jupiter and Saturn-crossing minor planet.
1999 LE31 spends most of its orbit located in the outer Solar System between Jupiter and Uranus, and like all centaurs, has an unstable orbit caused by the gravitational influence of the giant planets. Due to this, it must have originated from elsewhere, most likely outside Neptune.
Of over half a million known minor planets, 1999 LE31 is one of about 60 that has a retrograde orbit.
1999 LE31 is approximately 16.8 km in diameter. It came to perihelion (closest approach to the Sun) in December 1998. It was last observed in 2000, and will next come to perihelion in February 2022.
1999 LE31 Wikipedia
This asteroid has been recorded at such observatories as:Lincoln Laboratory (1.0-m f/2.15 reflector + CCD) - location of discovery
Dominion Astrophysical Observatory (1.82-m reflector + CCD)
Dynic Astronomical Observatory (0.60-m f/3.7 reflector + CCD)
European Northern Observatory (1.0-m reflector + CCD)
Farpoint (0.30-m Schmidt-Cassegrain + CCD)
Kleť Observatory (0.57-m f/5.2 reflector + CCD)
McDonald Observatory (0.76-m reflector + CCD)
Roque de los Muchachos Observatory (1.0-m reflector + CCD)