(40776) Yeungkwongyu Main-belt Asteroid
Discovered on 7 October 1999 by R. A. Tucker at Goodricke-Pigott.
Canadian amateur astronomer William Kwong Yu Yeung (b. 1960) is one of the world's most prolific amateur discoverers of asteroids. He has also found comets and J002E3, believed to be the Apollo 12 S-IVB stage.Naming citation (WGSBN Bull. 5, #21, 6), IAU / Minor Planet Center, via NASA/JPL
Where Yeungkwongyu is today
Seen from above the solar system on 2026-10-14: Yeungkwongyu is 2.92 au from the Sun and 3.80 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 40776 |
| Provisional designation | 1999 TA21 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 3.10 hours |
| Absolute magnitude (H) | 14.3 |
| Orbital period | 5.05 years |
| Semi-major axis | 2.94 au |
| Perihelion – aphelion | 2.71 – 3.18 au |
| Eccentricity | 0.0791 |
| Inclination | 3.28° |
| Closest distance between its orbit and Earth's (MOID) | 1.73 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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