Viewing archive of Friday, 4 February 2011 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [MDI, AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux | C |
|---|---|---|---|---|
| 45 13 | 1 | A6.57 | C1.36 | 1 |
Sunspot regions
Region 11150 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 -6 | 10 -70 | BXO | S22W13 | |
Region 11152 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 | 10 | BXO | S18E11 | |
Solar flares on this day | ||||
| B2.74 B1.46 B3.71 C1.34 B1.7 B9.71 | ||||
All times in UTC
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| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/01 | M5.6 |
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| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| February 2025 | 154.6 +17.6 |
| Last 30 days | 128.5 -22.7 |