| Comet | C/1957 P1 (Mrkos) |
|---|---|
| User | Vsekhsvyatskij |
| User`s name | |
| Observation's time (UT) | 1957-08-07 00:00:00 |
| Tool | Naked eye |
| Observation's place | Kyiv |
| Magnitude | 2 |
| Comparison stars source | YG - Yale Bright Star Catalogue |
| Method | |
| Coma diameter(') | Not set |
| Tail's length | 5° |
| Condensation | |
| 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 | Not set |
| Light pollution zone | |
| Lm | Not set |
| Comment | Nucleus was bright yellow, reddish tail. |
| Morris Format | 1957 Aug 7. UT: m1=2, Tail: 5 deg...Naked Eye ... (Kyiv, ) |
