| Comet | 46P/Wirtanen |
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| User | Marco Goiato |
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| User`s name | Marco Antonio Coelho Goiato |
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| Observation's time (UT) | 2018-12-11 01:30:00 |
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| Tool | 4 x 50 B |
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| Observation's place | Araçatuba |
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| Magnitude | 4.2 |
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| Comparison stars source | YG - Yale Bright Star Catalogue |
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| Method | S - Sidgwick`s method |
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| Coma diameter(') | 60 |
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| Tail's length | Not set |
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| Condensation | 4/ |
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| Positional angle of tail | Not set |
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| Bortl's scale | Not set |
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| Aperture | 5 cm |
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| Focal length (mm) | Not set |
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| Type of tool | B - Binoculars |
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| Magnification | 4 |
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| Field of view (°) | Not set |
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| SQM-L in zenith | |
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| Light pollution zone | Green |
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| Lm | |
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| Comment | By using 20 x 100 B and refletor 22 L 32 x: tail 30' in PA 55 ( in the reflector I could see 3 tails, in PA 15, 55 and 80 respectively)
|
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| Morris Format | 2018 Dec 11.06 UT: m1=4.2, Dia.=60', DC=4.5 ...5-cm B (4x) ...Marco Antonio Coelho Goiato (Araçatuba, Brazil) |
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