2015er61 20170731 0021 tprystavski

Comet C/2015 ER61 (PANSTARRS)
2017 Jul. 31 00:21UT: m1=11.5: Dia.=&1.0' Tail=&13' in PA 266 deg… 0.20-m f/4 reflector + DSLR… Taras Prystavski
(Lviv, Ukraine)

Delta=1.67 AU; r=1.68 AU; Sky Motion 0.87"/min in PA 79 deg