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133 Cyrene
133 Cyrene is a fairly large and very bright main-belt asteroid that was discovered by J. C. Watson on August 16, 1873, and named after Cyrene, a nymph, daughter of king Hypseus and beloved of Apollo in Greek mythology.〔 It is classified as an S-type asteroid based upon its spectrum. It is listed as a member of the Hecuba group of asteroids that orbit near the 2:1 mean-motion resonance with Jupiter.〔 In the Tholen classification system, it is categorized as a stony SR-type asteroid.〔 Photometric observations of this asteroid at the Altimira Observatory in 1985 gave a light curve with a period of 12.707 ± 0.015 hours and a brightness variation of 0.22 in magnitude. This result matches previous measurements reported in 1984 and 2005.〔 ==References==
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