(20421) Joshelliott Main-belt Asteroid
Discovered on 14 October 1998 by LINEAR at Socorro.
Joshua P. Elliott (b. 1980) is an American software engineer in JPL’s Solar System Dynamics Group whose work supports accurate orbits, ephemerides, and impact-hazard assessments for small bodies. He also worked for the University of Colorado’s Laboratory for Atmospheric and Space Physics on the science data processing of missions such as MAVEN and Juno.Naming citation (WGSBN Bull. 6, #11, 20), IAU / Minor Planet Center, via NASA/JPL
Where Joshelliott is today
Seen from above the solar system on 2026-10-14: Joshelliott is 3.10 au from the Sun and 3.76 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20421 |
| Provisional designation | 1998 TG3 |
| Orbit class | Main-belt Asteroid |
| Rotation period | 11.9 hours |
| Absolute magnitude (H) | 13.77 |
| Orbital period | 3.76 years |
| Semi-major axis | 2.42 au |
| Perihelion – aphelion | 1.70 – 3.13 au |
| Eccentricity | 0.295 |
| Inclination | 21.5° |
| Closest distance between its orbit and Earth's (MOID) | 0.807 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Joshua
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- (10682) Kutryk
- (12086) Joshualevine
- (17991) Joshuaegan
- (19204) Joshuatree
- (21646) Joshuaturner
- (21862) Joshuajones
- (22020) Joshuahandal
- (22622) Strong
- (23808) Joshuahammer
- (25025) Joshuavo
- (25972) Pfefferjosh
All asteroids named after someone called Joshua
Also discovered on 14 October 1998
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- (25231) Naylor
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- (25233) Tallman
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- (27084) Heidilarson