(22473) Stanleyhey Main-belt Asteroid
Discovered on 2 March 1997 by Spacewatch at Kitt Peak.
James Stanley Hey (1909-2000) was a British radar engineer. In 1942 February, Hey was first to identify radio waves coming from a solar flare. Name suggested and citation prepared by Robert Jedicke and Peter Jedicke.Naming citation (MPC batch dated 2016-08-18), IAU / Minor Planet Center, via NASA/JPL
Where Stanleyhey is today
Seen from above the solar system on 2026-10-14: Stanleyhey is 3.15 au from the Sun and 3.95 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 22473 |
| Provisional designation | 1997 EN4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 6.71 km (#7,989 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0570 |
| Absolute magnitude (H) | 14.62 |
| Orbital period | 4.28 years |
| Semi-major axis | 2.64 au |
| Perihelion – aphelion | 2.11 – 3.16 au |
| Eccentricity | 0.198 |
| Inclination | 12.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.11 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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