(5186) Donalu Main-belt Asteroid
Discovered on 22 September 1990 by B. Roman at Palomar.
Where Donalu is today
Seen from above the solar system on 2026-10-14: Donalu is 2.75 au from the Sun and 3.27 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 5186 |
| Provisional designation | 1990 SB4 |
| Orbit class | Main-belt Asteroid |
| Diameter | 11.4 km (#4,376 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.260 |
| Rotation period | 3.15 hours |
| Absolute magnitude (H) | 11.98 |
| Orbital period | 4.14 years |
| Semi-major axis | 2.58 au |
| Perihelion – aphelion | 2.36 – 2.80 au |
| Eccentricity | 0.0848 |
| Inclination | 14.9° |
| Closest distance between its orbit and Earth's (MOID) | 1.41 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also discovered on 22 September 1990
- (6012) Williammurdoch
- (6268) Versailles
- (6605) Carmontelle
- (7412) Linnaeus
- (7578) Georgbohm
- (7649) Bougainville
- (7871) Tunder
- (9949) Brontosaurus
- (10088) Digne
- (10089) Turgot
- (10316) Williamturner
- (10523) D'Haveloose
More named asteroids discovered by B. Roman
← (5185) Alerossi · (5187) Domon →