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2140 Kemerovo : ウィキペディア英語版 | 2140 Kemerovo
2140 Kemerovo, provisional designation 1970 PE, is a 30-kilometer sized X-type asteroid from the outer regions of the asteroid belt. It was discovered by Russian female astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on 3 August 1970.〔 The asteroid orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 2 months (1,885 days). It has a rotation period of 9.2 hours.〔 Measurements of its albedo vary from 0.054 (NEOWISE misison) to 0.089 (IRAS) while detections by Akari's mid-infrared sensors as well as derived calculations from the LCDB project indicate a geometric albedo of 0.076 and 0.062, respectively.〔〔 It is named after Kemerovo Oblast, the regional center of the Russian Kemerovo district, and a significant industrial center in Siberia.〔 == References ==
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