Daily Sunspot Evaluation
Observation Details Saturday, 17 July 2021
- No
- 19218
- Date
- 2021 / 07 / 17,406
- Time
- 09:45 UT
- Seeing
- 3 / 5
- Number of groups (g)
- 3
- Number of spots (f)
- 12
- Relative number (R)
- 42
- Lf
- 1
- P0
- 4.75°
- B0
- 4.55°
- L0
- 194.24°
- Observer
- Başar COŞKUNOĞLU
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | NOAA |
|---|---|---|---|---|---|---|---|
| 1 | CSI – 9 | 26 | 04.7W | 199 | 05.7W | 03.8 | |
| 2 | BXO – 2 | -15 | 03.9E | 190 | 02.9E | 03.3 | |
| 3 | AX_ – 1 | -43 | 54.3E | 140 | 53.3E | - |