21p 20180815 pjordanov

21P/Giacobini–Zinner

15.08.2018 21h51 – 22h43 UT
Bresser 150/750, Canon 100D, 51x60s, 1600ISO

2018 Aug 15.9 UT: m1=7.6, Dia.=4.5', DC=5, Tail: 6 deg, in PA 250 deg ...15-cm L (28.8x) ...P. Jordanov (Dimitrovgrad-Brod, Bulgaria)

measurement on the image:
coma – 4'
tail length – 14'
tail PA° = 245°