| Comet | 21P/Giacobini-Zinner |
|---|---|
| User | Artom |
| User`s name | Artyom Novichonok |
| Observation's time (UT) | 2018-08-19 21:50:00 |
| Tool | 8-cm R S-W |
| Observation's place | Fedotovo, Karelia |
| Magnitude | 8.0: |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | M - Morris`s method |
| Coma diameter(') | 6 |
| Tail's length | 8' |
| Condensation | 6/ |
| Positional angle of tail | 260 |
| Bortl's scale | 2.5 |
| Aperture | 8 cm |
| Focal length (mm) | 400 |
| Type of tool | R - Refractor |
| Magnification | 16 |
| Field of view (°) | 0 |
| SQM-L in zenith | 21.06 |
| Light pollution zone | Gray |
| Lm | |
| Comment | 13 C; mid of astronomical twilight (Sun -14.8). Яркая звезда рядом с кометой затрудняет оценку блеска. |
| Morris Format | 2018 Aug 19.91 UT: m1=8.0:, Dia.=6', DC=6.5, Tail: 8 arcmin, in PA 260 deg ...8-cm R (16x) ...Artyom Novichonok (Fedotovo, Karelia, Russia) |
