(21700) Caseynicole Main-belt Asteroid
Discovered on 7 September 1999 by LINEAR at Socorro.
Casey Nicole McDonald (b. 1986) was awarded second place in the 2005 Intel International Science and Engineering Fair for her zoology project. She attends the Hedgesville High School, Hedgesville, West Virginia, U.S.A.Naming citation (20050822/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Caseynicole is today
Seen from above the solar system on 2026-10-14: Caseynicole is 2.99 au from the Sun and 3.86 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 21700 |
| Provisional designation | 1999 RD72 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 15.48 |
| Orbital period | 4.17 years |
| Semi-major axis | 2.59 au |
| Perihelion – aphelion | 2.19 – 2.99 au |
| Eccentricity | 0.153 |
| Inclination | 3.72° |
| Closest distance between its orbit and Earth's (MOID) | 1.19 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Casey
All asteroids named after someone called Casey
Also discovered on 7 September 1999
- (12126) Chersidamas
- (12577) Samra
- (12578) Bensaur
- (12585) Katschwarz
- (12586) Juliaspeyer
- (12588) Arseneau
- (12604) Lisatate
- (12924) Madisonicole
- (13818) Ullery
- (14214) Hirsch
- (15503) Estradioto
- (16067) Brandonfan