Comet46P/Wirtanen
UserMarco Goiato
User`s nameMarco Antonio Coelho Goiato
Observation's time (UT)2018-12-13 02:30:00
ToolNaked Eye
Observation's placeAraçatuba
Magnitude3.7:
Comparison stars sourceYG - Yale Bright Star Catalogue
MethodI - Variable stars (without defocusing)
Coma diameter(')>90
Tail's lengthNot set
Condensation3/
Positional angle of tailNot set
Bortl's scaleNot set
Aperture cm
Focal length (mm)Not set
Type of toolE - Naked eye
MagnificationNot set
Field of view (°)Not set
SQM-L in zenith
Light pollution zoneYellow
Lm
CommentStar with m1: 5.76 inside the coma
Morris Format2018 Dec 13.1 UT: m1=3.7:, Dia.=>90', DC=3.5...Naked Eye ...Marco Antonio Coelho Goiato (Araçatuba, Brazil)