(20336) Gretamills Main-belt Asteroid
Discovered on 21 April 1998 by LINEAR at Socorro.
Greta Mills mentored a finalist in the 2004 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Hanover High School, Hanover, New Hampshire.Naming citation (20040415/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Gretamills is today
Seen from above the solar system on 2026-10-14: Gretamills is 2.76 au from the Sun and 3.03 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 20336 |
| Provisional designation | 1998 HY61 |
| Orbit class | Main-belt Asteroid |
| Absolute magnitude (H) | 14.7 |
| Orbital period | 4.28 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 2.16 – 3.11 au |
| Eccentricity | 0.182 |
| Inclination | 2.15° |
| Closest distance between its orbit and Earth's (MOID) | 1.15 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Greta
All asteroids named after someone called Greta
Also discovered on 21 April 1998
- (9244) Visnjan
- (11715) Harperclark
- (11716) Amahartman
- (11718) Hayward
- (11719) Hicklen
- (11720) Horodyskyj
- (11721) Shawnlowe
- (11724) Ronaldhsu
- (11725) Victoriahsu
- (12091) Jesmalmquist
- (12092) Erinorourke
- (12093) Chrimatthews