(23257) Denny Main-belt Asteroid
Discovered on 29 December 2000 by W. K. Y. Yeung at Desert Beaver.
The Pin Point Astrometry Engine and ACP telescope control of Robert B. Denny (b. 1946) are significant contributions to the observation of minor planets.Naming citation (20010705/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
👶 Denny as a baby name🐶 Denny as a dog name🐱 Denny as a cat name
Where Denny is today
Seen from above the solar system on 2026-10-14: Denny is 2.82 au from the Sun and 3.67 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 23257 |
| Provisional designation | 2000 YW21 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.01 km (#8,908 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0590 |
| Absolute magnitude (H) | 15.11 |
| Orbital period | 4.04 years |
| Semi-major axis | 2.54 au |
| Perihelion – aphelion | 2.25 – 2.82 au |
| Eccentricity | 0.112 |
| Inclination | 5.73° |
| Closest distance between its orbit and Earth's (MOID) | 1.27 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 29 December 2000
- (22185) Stiavnica
- (23258) Tsuihark
- (23259) Miwadagakuen
- (23289) Naruhirata
- (41986) Fort Bend
- (68021) Taiki