Comet 21P/Giacobini-Zinner
UserAlexsandr Morozov
User`s nameAlexsandr Morozov
Observation's time (UT)2018-08-25 00:17
Toolтелескоп SW 10 dob
Observation's placeSukhinichi
Magnitude7.8
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodM - Morris`s method
Coma diameter(')5
Tail's length6'
Condensation6
Positional angle of tail270
Bortl's scaleNot set
Aperture25.4 cm
Focal length (mm)1200
Type of toolL - Newtonian reflector
Magnification48
Field of view (°)0.83
SQM-L in zenith
Light pollution zoneGreen
Lm5.36
Comment
Morris Format2018 Aug 25.01 UT: m1=7.8, Dia.=5', DC=6, Tail: 6 arcmin, in PA 270 deg ...25.4-cm L (48x) ...Alexsandr Morozov (Sukhinichi, Russia)