Daily Sunspot Evaluation
Observation Details Saturday, 4 February 2017
- No
- 17971
- Date
- 2017 / 02 / 04,323
- Time
- 07:45 UT
- Seeing
- 3 / 5
- Number of groups (g)
- 3
- Number of spots (f)
- 7
- Relative number (R)
- 37
- Lf
- 2
- P0
- -13.56°
- B0
- -6.25°
- L0
- 31.61°
- Observer
- Talar YONTAN
Remarks: Bulutlar Arasında, Kenar Titremesi
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | NOAA |
|---|---|---|---|---|---|---|---|
| 1 | AX_ – 2 | 14 | 81W | 113 | 83W | 2.4 | |
| 2 | BXO – 4 | 15 | 55W | 87 | 57W | 3.3 | |
| 3 | AX_ – 1 | 15 | 47W | 79 | 49W | - |
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