(9300) Johannes Main-belt Asteroid
Discovered on 14 August 1985 by E. Bowell at Anderson Mesa.
Johannes Andersen (b. 1943), of the Niels Bohr Institute for Astronomy, works mainly on the chemical and dynamical evolution of the Milky Way's disk. As IAU General Secretary (1997–2000), he has offered sage guidance on the IAU's role with near-Earth objects. The name is endorsed by B. G. Marsden and H. Rickman.Naming citation (WGSBN Bull. 5, #28, 6), IAU / Minor Planet Center, via NASA/JPL
Where Johannes is today
Seen from above the solar system on 2026-10-14: Johannes is 3.56 au from the Sun and 4.51 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9300 |
| Provisional designation | 1985 PS |
| Orbit class | Main-belt Asteroid |
| Diameter | 7.31 km (#7,303 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.0630 |
| Absolute magnitude (H) | 14.73 |
| Orbital period | 4.34 years |
| Semi-major axis | 2.66 au |
| Perihelion – aphelion | 1.71 – 3.61 au |
| Eccentricity | 0.357 |
| Inclination | 7.49° |
| Closest distance between its orbit and Earth's (MOID) | 0.718 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Niels
All asteroids named after someone called Niels
Also discovered on 14 August 1985
- (3327) Campins
- (4338) Velez
- (4373) Crespo
- (4570) Runcorn
- (4664) Hanner
- (4694) Festou
- (7640) Marzari
- (8075) Roero
- (9013) Sansaturio
- (10042) Budstewart
- (10043) Janegann
- (12225) Yanfernandez