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Abstract: We present photometric data of Comet C/2012 S1 (ISON) observed at heliocentric distance of 6.2 - 4.6 AU. The observations were made with the 60-cm telescope Zeiss-600 (ICAMER, p. Terskol, Russia). We analyze B, V and R bands images to describe the dusty cometary coma and to investigate its brightness.
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Last update: April 17, 2014