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 |
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