(20887) Ngwaikin Main-belt Asteroid
Discovered on 18 November 2000 by W. K. Y. Yeung at Desert Beaver.
Ng Wai Kin (b. 1974) is one of the pioneers in lunar and planetary imaging using webcam. His imaging work has been widely published in various international astronomical magazines. He is also a keen telescope maker and promotes sidewalk astronomy in Hong Kong.Naming citation (20061109/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ngwaikin is today
Seen from above the solar system on 2026-10-14: Ngwaikin is 1.88 au from the Sun and 1.54 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20887 |
| Provisional designation | 2000 WP2 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 5.72 hours |
| Absolute magnitude (H) | 15.03 |
| Orbital period | 3.36 years |
| Semi-major axis | 2.24 au |
| Perihelion – aphelion | 1.88 – 2.61 au |
| Eccentricity | 0.163 |
| Inclination | 3.20° |
| Closest distance between its orbit and Earth's (MOID) | 0.867 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.