The few observations published for comet 62P/Tsuchinshan 1 so far, indicate a different brightness evolution before and after perihelion. Prior to perihelion the formula
simulates the observations best, thereafter the formula
works better. This results, however, are preliminary. The maximum coma diameter reached 1.2', the absolute coma diameter increased from 75.000 km to 100.000 km.
Total Brightness and Coma diameter
Andreas Kammerer
