Daily Sunspot Evaluation
Observation Details Tuesday, 21 February 2017
- No
- 17979
- Date
- 2017 / 02 / 21,358
- Time
- 08:35 UT
- Seeing
- 3 / 5
- Number of groups (g)
- 1
- Number of spots (f)
- 12
- Relative number (R)
- 22
- Lf
- 2
- P0
- -19.45°
- B0
- -7.06°
- L0
- 167.30°
- Observer
- Hikmet ÇAKMAK
Remarks: Görüntü Titremesi
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | NOAA |
|---|---|---|---|---|---|---|---|
| 1 | DAI – 12 | 19 | 58E | 109 | 56E | 10.4 |
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