(20440) McClintock Main-belt Asteroid
Discovered on 10 May 1999 by LINEAR at Socorro.
Shannon Noel McClintock (b. 1989) is a finalist in the 2004 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her engineering project. She attends the Muirlands Middle School, La Jolla, California.Naming citation (20041028/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where McClintock is today
Seen from above the solar system on 2026-10-14: McClintock is 2.03 au from the Sun and 1.77 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20440 |
| Provisional designation | 1999 JO31 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.67 km (#13,527 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.274 |
| Absolute magnitude (H) | 14.61 |
| Orbital period | 3.79 years |
| Semi-major axis | 2.43 au |
| Perihelion – aphelion | 1.97 – 2.89 au |
| Eccentricity | 0.190 |
| Inclination | 0.861° |
| Closest distance between its orbit and Earth's (MOID) | 0.963 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Shannon
- (12860) Turney
- (20812) Shannonbabb
- (25404) Shansample
- (27311) Shannongonzales
- (30128) Shannonbunch
- (31461) Shannonlee
- (133009) Watters
All asteroids named after someone called Shannon
Also discovered on 10 May 1999
- (11219) Benbohn
- (11225) Borden
- (11227) Ksenborisova
- (11228) Botnick
- (11229) Brookebowers
- (11230) Deschaffer
- (11231) Schiavo
- (11413) Catanach
- (11414) Allanchu
- (12117) Meagmessina
- (16048) Eddiedai
- (16049) D'Amore