af(rho) plot comet 19P/BORRELLY

af(rho) plot comet 19P/BORRELLY

preliminary af(rho) graph of comet 19P/BORELLY with thanks to all the participating observers !

The observations in R(Cousins) band are due to: Rolando Ligustri, Francois Kugel, Andrea Aletti, Daniele Carosati, Diego Tirelli, Adriano Vavasori, Ernesto Guido, Giannantonio Milani, Mario Feraco, Erik Bryssinck, Joel Nicolas

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