(20749) Tiscareno Main-belt Asteroid
Discovered on 9 January 2000 by LINEAR at Socorro.
Matthew S. Tiscareno (b. 1976) is an American planetary scientist at the SETI Institute. A member of the Cassini Imaging Team, he led the discovery of “propeller” moons and impact clouds in Saturn’s rings and has conducted extensive research on ring dynamics and small moons.Naming citation (WGSBN Bull. 6, #11, 36), IAU / Minor Planet Center, via NASA/JPL
Where Tiscareno is today
Seen from above the solar system on 2026-10-14: Tiscareno is 2.79 au from the Sun and 1.91 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20749 |
| Provisional designation | 2000 AD199 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.38 km (#8,410 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.109 |
| Rotation period | 10.2 hours |
| Absolute magnitude (H) | 14.09 |
| Orbital period | 3.84 years |
| Semi-major axis | 2.45 au |
| Perihelion – aphelion | 2.07 – 2.83 au |
| Eccentricity | 0.154 |
| Inclination | 14.3° |
| Closest distance between its orbit and Earth's (MOID) | 1.10 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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