| Comet | 46P/Wirtanen |
|---|---|
| User | Castor 98 |
| User`s name | Marek Biely |
| Observation's time (UT) | 2018-12-22 19:07:00 |
| Tool | Naked eye |
| Observation's place | Brno (244 m a.s.l.) |
| Magnitude | 4.4: |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | I - Variable stars (without defocusing) |
| Coma diameter(') | &30 |
| Tail's length | Not set |
| Condensation | 0/ |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | cm |
| Focal length (mm) | Not set |
| Type of tool | E - Naked eye |
| Magnification | Not set |
| Field of view (°) | Not set |
| SQM-L in zenith | |
| Light pollution zone | |
| Lm | |
| Comment | Observed between clouds and after almost the whole afternoon of rain. Observation was also influenced by strong moonlight. Due to these reasons are the magnitude and coma values uncertain. |
| Morris Format | 2018 Dec 22.8 UT: m1=4.4:, Dia.=&30', DC=0.5...Naked Eye ...Marek Biely (Brno (244 m a.s.l.), Czech Republic) |
