(18199) Shackelford Main-belt Asteroid
Discovered on 24 September 1960 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Autumn Shackelford (b. 1998) is an American postdoctoral researcher at the University of Central Florida. Her research focuses on understanding the space-weathering process on carbon-bearing planetary surfaces like asteroids and Mercury using laboratory spectroscopic and microscopic characterization of analog samples.Naming citation (WGSBN Bull. 6, #10, 8), IAU / Minor Planet Center, via NASA/JPL
Where Shackelford is today
Seen from above the solar system on 2026-10-14: Shackelford is 3.10 au from the Sun and 2.78 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18199 |
| Provisional designation | 2583 P-L |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.00 km (#12,734 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.230 |
| Absolute magnitude (H) | 14.41 |
| Orbital period | 5.00 years |
| Semi-major axis | 2.92 au |
| Perihelion – aphelion | 2.69 – 3.15 au |
| Eccentricity | 0.0783 |
| Inclination | 2.93° |
| Closest distance between its orbit and Earth's (MOID) | 1.68 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 24 September 1960
- (1743) Schmidt
- (1744) Harriet
- (1776) Kuiper
- (1777) Gehrels
- (1795) Woltjer
- (1808) Bellerophon
- (1809) Prometheus
- (1810) Epimetheus
- (1811) Bruwer
- (1812) Gilgamesh
- (1846) Bengt
- (1868) Thersites