Comet46P/Wirtanen
UserAlexsandr Morozov
User`s nameAlexsandr Morozov
Observation's time (UT)2019-01-08 15:45
Toolмонокуляр 20x60
Observation's placeNovozybkov
Magnitude7.1
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodS - Sidgwick`s method
Coma diameter(')16
Tail's lengthNot set
Condensation2
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
Lm5.58
Comment
Morris Format2019 Jan 8.66 UT: m1=7.1, Dia.=16', DC=2 ...6-cm B (20x) ...Alexsandr Morozov (Novozybkov, Russia)