Discovered by James Craig Watson Minor planet category Main belt Discovered 16 August 1873 Spectral type S-type asteroid Named after Cyrene | Discovery date 16 August 1873 Observation arc 142.65 yr (52104 d) Orbits Sun Discoverer James Craig Watson Discovery site Detroit Observatory | |
Alternative names A910 NB; 1936 HO;
1948 QC; 1959 UR Aphelion 3.48274 AU (521.010 Gm) James Craig Watson discoveries 132 Aethra, 161 Athor, 174 Phaedra | ||
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
133 Cyrene Wikipedia(Text) CC BY-SA