| Comet | C/2013 US10 (Catalina) |
|---|---|
| User | Castor 98 |
| User`s name | Marek Biely |
| Observation's time (UT) | 2015-12-31 04:18:00 |
| Tool | 20x80 binoculars |
| Observation's place | Brno (244 m a.s.l.) |
| Magnitude | 6.6: |
| Comparison stars source | HJ - Magnitudes in the Hipparcos photometric system |
| Method | S - Sidgwick`s method |
| Coma diameter(') | &5 |
| Tail's length | Not set |
| Condensation | 3/ |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 8 cm |
| Focal length (mm) | Not set |
| Type of tool | B - Binoculars |
| Magnification | 20 |
| Field of view (°) | 2.5 |
| SQM-L in zenith | |
| Light pollution zone | |
| Lm | |
| Comment | Finally I could see it despite not very good observing conditions. Coma was diffuse and circular, tails were not visible. Observation was influenced by thin clouds and moonlight. |
| Morris Format | 2015 Dec 31.18 UT: m1=6.6:, Dia.=&5', DC=3.5 ...8-cm B (20x) ...Marek Biely (Brno (244 m a.s.l.), Czech Republic) |
