| Comet | C/2019 Y4 (ATLAS) |
|---|
| User | nikgus |
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| User`s name | |
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| Observation's time (UT) | 2020-04-23 22:00 |
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| Tool | Celestron SkyMaster 25*100 |
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| Observation's place | Заволжск |
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| Comparison stars source | HJ - Magnitudes in the Hipparcos photometric system |
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| Method | B - Bobrovnikoff`s method |
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| Magnitude | 9.6 |
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| Coma diameter(') | 3 |
|---|
| Tail's length | Not set |
|---|
| Condensation | 4 |
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| Positional angle of tail | Not set |
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| Bortl's scale | Not set |
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| Aperture | 10 |
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| Focal length (mm) | Not set |
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| Type of tool | B - Binoculars |
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| Magnification | 25 |
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| Field of view (°) | 3 |
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| SQM-L in zenith | |
|---|
| Light pollution zone | Green |
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| Lm | 5.7 |
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| Comment | |
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| Morris Format | 2020 Apr 23.92 UT: m1=9.6, Dia.=3', DC=4 ...10-cm B (25x) ...Николай Гусев (Заволжск, Россия) |
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