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C/1962 C1 survived an encounter with the Sun at less than 7 Rsun, while C/2002 O4 disintegrated near perihelion at 0.78 AU from the Sun. Less than two months before its perihelion at 2.7 Rsun, C/2012 S1 has a light curve that is much closer to C/1962 C1 than C/2002 O4. 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