(5065) Johnstone Main-belt Asteroid
Discovered on 24 March 1990 by E. F. Helin at Palomar.
Named in memory of Paul Johnstone (1920–1976), the first director and producer of the well-known British TV program The Sky at Night, now celebrating its 40th anniversary.Naming citation (WGSBN Bull. 4, #9, 4), IAU / Minor Planet Center, via NASA/JPL
Where Johnstone is today
Seen from above the solar system on 2026-10-14: Johnstone is 2.51 au from the Sun and 3.10 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5065 |
| Provisional designation | 1990 FP1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 13.1 km (#3,697 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0580 |
| Rotation period | 14.0 hours |
| Absolute magnitude (H) | 13.34 |
| Orbital period | 3.99 years |
| Semi-major axis | 2.51 au |
| Perihelion – aphelion | 2.40 – 2.63 au |
| Eccentricity | 0.0443 |
| Inclination | 6.53° |
| Closest distance between its orbit and Earth's (MOID) | 1.41 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
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