Daily Sunspot Evaluation
Observation Details Tuesday, 20 April 2021
- No
- 19165
- Date
- 2021 / 04 / 20,319
- Time
- 07:40 UT
- Seeing
- 3 / 5
- Number of groups (g)
- 4
- Number of spots (f)
- 27
- Relative number (R)
- 67
- Lf
- 2
- P0
- -25.58°
- B0
- -5.17°
- L0
- 279.57°
- Observer
- Korhan YELKENCİ
Remarks: Kenar Titremesi
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | NOAA |
|---|---|---|---|---|---|---|---|
| 1 | DAC – 16 | 17 | 50.7W | 330 | 52.7W | 9.3 | |
| 2 | AX_ – 1 | 13 | 36.3W | 316 | 38.3W | - | |
| 3 | DAC – 9 | -25 | 17.8E | 262 | 15.8E | 8.7 | |
| 4 | HS_ – 1 | -17 | 74.6E | 205 | 72.6E | 2.2 |