Comet46P/Wirtanen
UserAlexsandr Morozov
User`s nameAlexsandr Morozov
Observation's time (UT)2019-01-08 16:00
Toolтелескоп SW 10 dob
Observation's placeNovozybkov
Magnitude6.4
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodS - Sidgwick`s method
Coma diameter(')18
Tail's lengthNot set
Condensation3/
Positional angle of tailNot set
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
Lm6.06
Comment
Morris Format2019 Jan 8.67 UT: m1=6.4, Dia.=18', DC=3.5 ...25.4-cm L (48x) ...Alexsandr Morozov (Novozybkov, Russia)