Daily Sunspot Evaluation
Observation Details Thursday, 21 September 2017
- No
- 18172
- Date
- 2017 / 09 / 21,372
- Time
- 08:55 UT
- Seeing
- 3 / 5
- Number of groups (g)
- 2
- Number of spots (f)
- 2
- Relative number (R)
- 22
- Lf
- 2
- P0
- 25.01°
- B0
- 7.08°
- L0
- 245.87°
- Observer
- S.FİŞEK=K.Y.
Remarks: Kenar Titremesi
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | NOAA |
|---|---|---|---|---|---|---|---|
| 1 | HH_ – 1 | 9 | 70W | 316 | 72W | 2.6 | |
| 2 | HH_ – 1 | -13 | 67.8E | 178 | 65.8E | 2.7 |
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