(100047) Leobaeck Main-belt Asteroid
Discovered on 2 October 1991 by Borngen, F., Schmadel, L. D. at Tautenburg.
Leo Baeck (1873-1956) was a leading liberal Jewish religious thinker. His The Essence of Judaism appeared in 1905. After liberation from Theresienstadt he participated in the resumption of German-Jewish dialogue. He became president of both the Council of Jews from Germany and the World Union for Progressive Judaism.Naming citation (20060413/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Leobaeck is today
Seen from above the solar system on 2026-10-14: Leobaeck is 2.83 au from the Sun and 3.05 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 100047 |
| Provisional designation | 1991 TU6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 1.85 km (#17,191 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.226 |
| Rotation period | 3.47 hours |
| Absolute magnitude (H) | 16.1 |
| Orbital period | 3.77 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 1.93 – 2.92 au |
| Eccentricity | 0.204 |
| Inclination | 1.75° |
| Closest distance between its orbit and Earth's (MOID) | 0.916 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Leo
- (6920) Esaki
- (8131) Scanlon
- (9070) Ensab
- (12688) Baekeland
- (17096) Takemaru
- (23937) Delibes
- (24945) Houziaux
- (28794) Crowley
- (30166) Leodeng
- (32569) Deming
- (34388) Wylonis
- (38442) Szilard
All asteroids named after someone called Leo
Also discovered on 2 October 1991
- (6865) Dunkerley
- (8371) Goven
- (9351) Neumayer
- (17488) Mantl
- (17489) Trenker
- (20017) Alixcatherine
- (26842) Hefele
- (29214) Apitzsch
- (30851) Reissfelder
- (30852) Debye
- (48472) Mossbauer
- (69295) Stecklum