| Comet | C/1799 P1 (Méchain) |
|---|---|
| User | Herschel_w |
| User`s name | William Herschel |
| Observation's time (UT) | 1799-09-08 00:00:00 |
| Tool | Reflector of Herschel 8.5-inch (47 cm) 20-foot-focal-length (6.1 m) |
| Observation's place | Slough |
| Magnitude | |
| Comparison stars source | |
| Method | |
| Coma diameter(') | &10 |
| Tail's length | 0.25° |
| Condensation | |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 46.99 cm |
| Focal length (mm) | 6100 |
| Type of tool | L - Newtonian reflector |
| Magnification | Not set |
| Field of view (°) | Not set |
| SQM-L in zenith | Not set |
| Light pollution zone | |
| Lm | Not set |
| Comment | |
| Morris Format | 1799 Sep 8. UT:, Dia.=&10', Tail: 0.25 deg ...46.99-cm L ...William Herschel (Slough, England) |
