Comet 21P/Giacobini-Zinner
UserAlexsandr Morozov
User`s nameAlexsandr Morozov
Observation's time (UT)2018-08-16 20:40
Toolмонокуляр 20x60
Observation's placeSukhinichi
Magnitude7.9
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodM - Morris`s method
Coma diameter(')8
Tail's lengthNot set
Condensation5/
Positional angle of tailNot set
Bortl's scaleNot set
Aperture6 cm
Focal length (mm)Not set
Type of toolB - Binoculars
Magnification20
Field of view (°)3
SQM-L in zenith
Light pollution zoneGreen
Lm
Comment
Morris Format2018 Aug 16.86 UT: m1=7.9, Dia.=8', DC=5.5 ...6-cm B (20x) ...Alexsandr Morozov (Sukhinichi, Russia)