Daily Sunspot Evaluation
Observation Details Monday, 21 April 2025
- No
- 20228
- Date
- 2025 / 04 / 21,354
- Time
- 08:30 UT
- Seeing
- 3 / 5
- Number of groups (g)
- 8
- Number of spots (f)
- 63
- Relative number (R)
- 143
- Lf
- 2
- P0
- -25.46°
- B0
- -5.09°
- L0
- 62.46°
- Observer
- Korhan YELKENCİ
Remarks: Kenar Titremesi
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | NOAA |
|---|---|---|---|---|---|---|---|
| 1 | AX_ – 3 | 7 | 71.8W | 134 | 73.8W | 1.0 | |
| 2 | CAI – 7 | 4 | 52.6W | 115 | 54.6W | 4.2 | |
| 3 | DAI – 20 | 10 | 17.4E | 45 | 15.4E | 11.2 | |
| 4 | DAI – 23 | -3 | 06.9W | 69 | 08.9W | 5.4 | |
| 5 | AX_ – 1 | -4 | 19.5E | 43 | 17.5E | - | |
| 6 | CAI – 4 | -30 | 21.6E | 41 | 19.6E | 4.1 | |
| 7 | HS_ – 1 | -4 | 28.4E | 34 | 26.4E | 1.8 | |
| 8 | CAI – 4 | -26 | 69.8E | 353 | 67.8E | 3.8 |