Monitoring the fragmentation of C/2019 Y4 (ATLAS)

Using the remotely controlled telescope from Berthelot Observatory (MPC L43) we detected and monitored unusual cometary activity of long period comet C/2019 Y4 (ATLAS), involving the breakup of the nucleus of the long period comet C/2019 Y4 (ATLAS). The comet was observed to fall and rise in brightness in a short period of time. We also detected three fragments from the nucleus.