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
Baron Franz Xaver von Zach (''Franz Xaver Freiherr von Zach''; 4 June 1754 – 2 September 1832) was a Hungarian astronomer born at Pest, Hungary (now Budapest in Hungary).
Biography
Zach studied physics at the Royal University of Pest, and s ...
.
Photometric observations of this asteroid collected during 1999 show a
rotation period
The rotation period of a celestial object (e.g., star, gas giant, planet, moon, asteroid) may refer to its sidereal rotation period, i.e. the time that the object takes to complete a single revolution around its axis of rotation relative to the ...
of 22.77 ± 0.03 hours with a brightness variation of 0.3
magnitude.
References
External links
Lightcurve plot of 999 Zachia Palmer Divide Observatory,
B. D. Warner (1999)
Asteroid Lightcurve Database (LCDB) query form
Dictionary of Minor Planet Names Google books
– Observatoire de Genève, Raoul Behrend
– Minor Planet Center
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000999
Discoveries by Karl Wilhelm Reinmuth
Named minor planets
19230809
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vec:Lista de asteroidi#999 Zachia