(21029) Adorno Main-belt Asteroid
Discovered on 7 October 1989 by E. W. Elst at La Silla.
Theodor W. Adorno (1903-1969), German philosopher and musicologist, was a leading figure in the Frankfurter Schule of critical theory. Writings such as Dialectic of Enlightenment (1947) show him to be one of the 20th century's foremost thinkers on aesthetics and philosophy.Naming citation (MPC batch dated 2013-09-19), IAU / Minor Planet Center, via NASA/JPL
Where Adorno is today
Seen from above the solar system on 2026-10-14: Adorno is 2.94 au from the Sun and 3.87 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21029 |
| Provisional designation | 1989 TA6 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.49 km (#11,649 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.241 |
| Absolute magnitude (H) | 14.32 |
| Orbital period | 4.86 years |
| Semi-major axis | 2.87 au |
| Perihelion – aphelion | 2.70 – 3.04 au |
| Eccentricity | 0.0589 |
| Inclination | 3.27° |
| Closest distance between its orbit and Earth's (MOID) | 1.69 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Theodor
All asteroids named after someone called Theodor
Also discovered on 7 October 1989
- (8489) Boulder
- (8837) London
- (11870) Sverige
- (11871) Norge
- (12261) Ledouanier
- (13032) Tarn
- (13033) Gardon
- (17439) Juliesan