Comet46P/Wirtanen
UserMarco Goiato
User`s nameMarco Antonio Coelho Goiato
Observation's time (UT)2018-12-20 02:00:00
Tool7 x 50 B
Observation's placeAraçatuba
Magnitude4.2
Comparison stars sourceYG - Yale Bright Star Catalogue
MethodS - Sidgwick`s method
Coma diameter(')45
Tail's lengthNot set
Condensation3/
Positional angle of tailNot set
Bortl's scaleNot set
Aperture5 cm
Focal length (mm)Not set
Type of toolB - Binoculars
Magnification7
Field of view (°)6
SQM-L in zenith
Light pollution zoneYellow
Lm
CommentMoonlight
Morris Format2018 Dec 20.08 UT: m1=4.2, Dia.=45', DC=3.5 ...5-cm B (7x) ...Marco Antonio Coelho Goiato (Araçatuba, Brazil)