(20746) Tadashi Main-belt Asteroid
Discovered on 8 January 2000 by LINEAR at Socorro.
Tadashi Yokoyama (b. 1949) is a Brazilian researcher who worked at São Paulo State University-Brazil, where he supervised many postgraduate students, as well as postdoctoral researchers. He has experience in the field of dynamical astronomy, working mainly on satellite dynamics, orbital evolution, resonance, and perturbative methods.Naming citation (WGSBN Bull. 6, #11, 35), IAU / Minor Planet Center, via NASA/JPL
Where Tadashi is today
Seen from above the solar system on 2026-10-14: Tadashi is 2.92 au from the Sun and 2.06 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20746 |
| Provisional designation | 2000 AL186 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.25 km (#12,150 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.186 |
| Absolute magnitude (H) | 14.07 |
| Orbital period | 4.50 years |
| Semi-major axis | 2.73 au |
| Perihelion – aphelion | 2.45 – 3.01 au |
| Eccentricity | 0.103 |
| Inclination | 12.5° |
| Closest distance between its orbit and Earth's (MOID) | 1.47 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 8 January 2000
- (13869) Fruge
- (16189) Riehl
- (16190) Kabirjolly
- (17214) Neervannan
- (20744) Susannewampfler
- (20745) Sylvainlodiot
- (20747) Tanialepivert
- (20748) Thamirissantana
- (20754) Urbanik
- (22079) Kabinoff
- (22082) Rountree
- (24376) Ramesh