Frédéric Sy (1861-1917) was a French astronomer and a discoverer of minor planets.
[2] While working in Algiers he published extensively on the subjects of minor asteroids and comets, and was a colleague of astronomer François Gonnessiat.
Sy was responsible for the discovery and naming of two asteroids,[1] 858 El Djezaïr and 859 Bouzaréah.
The names were drawn from locations near the discovering Algiers Observatory.
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