2021a1 20211215 anovichonock

Leonard's comet is fading quickly after the outburst:
Dec. 15.61 UT: m1=3.7±0.4 V , Dia.=9', dust tail = 10' in ~17 hours after my previous estimate.

So rate of fading is 1.1 mag/17 h.

Images by S. Korotkiy, processing of D. Seleznev.