Daily Sunspot Evaluation
Observation Details Tuesday, 17 April 2012
- No
- 16477
- Date
- 2012 / 04 / 17,358
- Time
- 08:35 UT
- Seeing
- 3 / 5
- Number of groups (g)
- 4
- Number of spots (f)
- 65
- Relative number (R)
- 105
- Lf
- 2
- P0
- -25.84°
- B0
- -5.40°
- L0
- 143.10°
- Observer
- Özgecan ÖNAL
Remarks: Hafif Sis
Sunspot groups
| No | Group (class – spots) | B | Δ L | L | Δ Lf | U | NOAA |
|---|---|---|---|---|---|---|---|
| 1 | BXI – 13 | 6 | 67W | 210 | 69W | 10.7 | |
| 2 | BXO – 14 | 15 | 37E | 107 | 35E | 4.9 | |
| 3 | AX_ – 3 | 11 | 74E | 69 | 72E | 2.2 | |
| 4 | EAI – 35 | -17 | 52E | 91 | 50E | 10.9 |