(16999) Ajstewart Main-belt Asteroid
Discovered on 10 February 1999 by LINEAR at Socorro.
Andrew James Stewart (b. 1987) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his environmental science project. He attends the Karabar Distance Education Centre, Queanbeyan, NSW, Australia.Naming citation (20040614/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Ajstewart is today
Seen from above the solar system on 2026-10-14: Ajstewart is 2.23 au from the Sun and 2.11 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 16999 |
| Provisional designation | 1999 CE47 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.78 km (#11,051 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.177 |
| Absolute magnitude (H) | 14.34 |
| Orbital period | 3.77 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 2.02 – 2.82 au |
| Eccentricity | 0.165 |
| Inclination | 3.04° |
| Closest distance between its orbit and Earth's (MOID) | 1.01 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Andrew
- (5280) Andrewbecker
- (5441) Andymurray
- (6814) Steffl
- (6825) Irvine
- (6947) Andrewdavis
- (7150) McKellar
- (8257) Andycheng
- (8867) Tubbiolo
- (9999) Wiles
- (10230) Andrewnorton
- (11450) Shearer
- (12506) Pariser
All asteroids named after someone called Andrew
Also discovered on 10 February 1999
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- (15492) Nyberg
- (16012) Jamierubin
- (16013) Schmidgall
- (16014) Sinha
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- (16016) Boylan