| Comet | 17P/Holmes |
|---|---|
| User | Giuseppe Pappa |
| User`s name | Giuseppe Pappa |
| Observation's time (UT) | 2008-01-13 20:30:00 |
| Tool | Binocular 12x50 |
| Observation's place | Mascalucia |
| Magnitude | 4.2 |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | S - Sidgwick`s method |
| Coma diameter(') | 75 |
| Tail's length | Not set |
| Condensation | 0 |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 5 cm |
| Focal length (mm) | Not set |
| Type of tool | B - Binoculars |
| Magnification | 12 |
| Field of view (°) | 5 |
| SQM-L in zenith | Not set |
| Light pollution zone | |
| Lm | Not set |
| Comment | |
| Morris Format | 2008 Jan 13.85 UT: m1=4.2, Dia.=75', DC=0 ...5-cm B (12x) ...Giuseppe Pappa (Mascalucia, Italy) |
