999 Zachia

Last updated

999 Zachia
Discovery
Discovered by K. Reinmuth
Discovery site Heidelberg
Discovery date9 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
4.22 yr (1541.8 d)
352.050°
0° 14m 0.6s / day
Inclination 9.7603°
214.972°
128.034°
Physical characteristics
8.95 km
22.77  h (0.949  d)
0.1994±0.051
10.8

    999 Zachia is a main-belt asteroid that was discovered by German astronomer Karl W. Reinmuth in 1923 and named after Hungarian astronomer Franz Xaver von Zach.

    Photometric observations of this asteroid collected during 1999 show a rotation period of 22.77 ± 0.03 hours with a brightness variation of 0.3 magnitude. [2]

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    References

    1. "999 Zachia (1923 NW)". JPL Small-Body Database . NASA/Jet Propulsion Laboratory . Retrieved 2 May 2016.
    2. Warner, B. (March 2000), "Asteroid Photometry at the Palmer Divide Observatory", The Minor Planet Bulletin, 27: 4–6, Bibcode:2000MPBu...27....4W.