Comet46P/Wirtanen
UserJorge Luis Salas
User`s nameJorge Luis Salas
Observation's time (UT)2018-12-14 02:00
Tool 10x70
Observation's placesan diego,carabobo
Magnitude4.6
Comparison stars sourceHJ - Magnitudes in the Hipparcos photometric system
MethodM - Morris`s method
Coma diameter(')30
Tail's lengthNot set
Condensation3/
Positional angle of tailNot set
Bortl's scaleNot set
Aperture7 cm
Focal length (mm)Not set
Type of toolB - Binoculars
Magnification10
Field of view (°)5
SQM-L in zenith
Light pollution zone
Lm
Comment
Morris Format2018 Dec 14.08 UT: m1=4.6, Dia.=30', DC=3.5 ...7-cm B (10x) ...Jorge Luis Salas (san diego,carabobo, venezuela)