| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg |
| Discovery date | 9 August 1923 |
| Designations | |
| (999) Zachia | |
| 1923 NW | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 92.68 yr (33850 days) |
| Aphelion | 3.1787 AU (475.53 Gm) |
| Perihelion | 2.0450 AU (305.93 Gm) |
| 2.6118 AU (390.72 Gm) | |
| Eccentricity | 0.21704 |
| 4.22yr (1541.8d) | |
| 352.050° | |
| 0° 14m 0.6s / day | |
| Inclination | 9.7603° |
| 214.972° | |
| 128.034° | |
| Physical characteristics | |
| 8.95km | |
| 22.77 h (0.949 d) | |
| 0.1994±0.051 | |
| 10.8 | |
999 Zachia is amain-belt asteroid that was discovered by German astronomerKarl W. Reinmuth in 1923 and named after Hungarian astronomerFranz Xaver von Zach.
Photometric observations of this asteroid collected during 1999 show arotation period of 22.77 ± 0.03 hours with a brightness variation of 0.3magnitude.[2]
_mathilde.jpg) | This article about an asteroid native to theasteroid belt is astub. You can help Wikipedia byexpanding it. |
