(21822) Degiorgi Main-belt Asteroid
Discovered on 15 October 1999 by LONEOS at Anderson Mesa.
Ennio De Giorgi (1928-1996) was an outstanding Italian mathematician, known for his fundamental theorems in the calculus of variations, in minimal surface theory, in partial differential equations and in axiomatic set theory.Naming citation (20080718/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Degiorgi is today
Seen from above the solar system on 2026-10-14: Degiorgi is 2.35 au from the Sun and 2.16 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21822 |
| Provisional designation | 1999 TX36 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.99 km (#12,764 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.254 |
| Absolute magnitude (H) | 14.12 |
| Orbital period | 4.00 years |
| Semi-major axis | 2.52 au |
| Perihelion – aphelion | 2.20 – 2.85 au |
| Eccentricity | 0.129 |
| Inclination | 12.7° |
| Closest distance between its orbit and Earth's (MOID) | 1.22 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 15 October 1999
- (17178) Caitlinrita
- (22928) Templehe
- (22944) Sarahmarzen
- (22945) Schikowski
- (22947) Carolsuh
- (25381) Jerrynelson
- (38461) Jiritrnka
- (66671) Sfasu
- (70449) Gruebel
- (137315) Wangshouwu
- (192686) Aljuroma