(999) Zachia Main-belt Asteroid
Discovered on 9 August 1923 by K. Reinmuth at Heidelberg.
Where Zachia is today
Seen from above the solar system on 2026-10-14: Zachia is 3.10 au from the Sun and 3.66 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 999 |
| Provisional designation | A923 PE |
| Orbit class | Main-belt Asteroid |
| Diameter | 16.8 km (#2,709 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.226 |
| Rotation period | 22.8 hours |
| Absolute magnitude (H) | 10.89 |
| Orbital period | 4.23 years |
| Semi-major axis | 2.61 au |
| Perihelion – aphelion | 2.05 – 3.18 au |
| Eccentricity | 0.216 |
| Inclination | 9.75° |
| Closest distance between its orbit and Earth's (MOID) | 1.06 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
More named asteroids discovered by K. Reinmuth
- (796) Sarita
- (799) Gudula
- (864) Aase
- (909) Ulla
- (910) Anneliese
- (911) Agamemnon
- (913) Otila
- (918) Itha
- (920) Rogeria
- (921) Jovita
- (922) Schlutia
- (923) Herluga
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