(18562) Ellenkey Main-belt Asteroid
Discovered on 8 March 1997 by E. W. Elst at La Silla.
Ellen Karolina Sofia Key (1849–1926) was a Swedish feminist and writer on subjects such as family life, ethics and education. She was an early advocate of child-centered approach to education.Naming citation (WGSBN Bull. 3, #12, 14), IAU / Minor Planet Center, via NASA/JPL
Where Ellenkey is today
Seen from above the solar system on 2026-10-14: Ellenkey is 2.94 au from the Sun and 3.74 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 18562 |
| Provisional designation | 1997 EK54 |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.7 km (#4,226 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0430 |
| Absolute magnitude (H) | 13.57 |
| Orbital period | 5.71 years |
| Semi-major axis | 3.20 au |
| Perihelion – aphelion | 2.87 – 3.52 au |
| Eccentricity | 0.102 |
| Inclination | 1.59° |
| Closest distance between its orbit and Earth's (MOID) | 1.85 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Ellen
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- (19768) Ellendoane
- (20043) Ellenmacarthur
- (22871) Ellenoei
- (26686) Ellenprice
- (30122) Elschweitzer
- (30225) Ellenzweibel
- (117703) Ochoa
- (328677) Stofan
All asteroids named after someone called Ellen