(69273) Derbyastro Main-belt Asteroid
Discovered on 4 October 1989 by B. G. W. Manning at Stakenbridge.
The Derby and District Astronomical Society is based in Derby, England and was founded in 1974 by Jane Kirk. The society holds monthly meetings and engages in public and educational activities. It also operates the Flamsteed Observatory and runs monthly public viewing nights.Naming citation (WGSBN Bull. 4, #5, 6), IAU / Minor Planet Center, via NASA/JPL
Where Derbyastro is today
Seen from above the solar system on 2026-10-14: Derbyastro is 2.21 au from the Sun and 1.91 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 69273 |
| Provisional designation | 1989 TN1 |
| Orbit class | Main-belt Asteroid |
| Diameter | 4.57 km (#11,490 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.122 |
| Absolute magnitude (H) | 14.6 |
| Orbital period | 4.56 years |
| Semi-major axis | 2.75 au |
| Perihelion – aphelion | 2.11 – 3.39 au |
| Eccentricity | 0.233 |
| Inclination | 11.1° |
| Closest distance between its orbit and Earth's (MOID) | 1.14 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 4 October 1989
- (6241) Galante
- (6778) Tosamakoto
- (7239) Mobberley
- (8490) Akiehashimoto
- (9173) Viola Castello
- (9580) Tarumi
- (10514) Harlow