| Comet | C/2017 S3 (PANSTARRS) | 
|---|---|
| User | Alexsandr Morozov | 
| User`s name | Alexsandr Morozov | 
| Observation's time (UT) | 2018-07-22 21:33 | 
| Tool | телескоп SW 10 dob | 
| Observation's place | Sukhinichi | 
| Magnitude | 9.9 | 
| Comparison stars source | HJ - Magnitudes in the Hipparcos photometric system | 
| Method | S - Sidgwick`s method | 
| Coma diameter(') | 4 | 
| Tail's length | Not set | 
| Condensation | 2/ | 
| Positional angle of tail | Not set | 
| Bortl's scale | Not set | 
| Aperture | 25.4 cm | 
| Focal length (mm) | 1200 | 
| Type of tool | L - Newtonian reflector | 
| Magnification | 120 | 
| Field of view (°) | 0.42 | 
| SQM-L in zenith | |
| Light pollution zone | Green | 
| Lm | |
| Comment | |
| Morris Format | 2018 Jul 22.9 UT: m1=9.9, Dia.=4', DC=2.5 ...25.4-cm L (120x) ...Alexsandr Morozov (Sukhinichi, Russia) |