Viewing archive of Friday, 21 April 2017 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux |
|---|---|---|---|
| 39 13 | 1 | B1.57 | B8.86 |
Sunspot regions
Region 12651 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 1 | 130 20 | DAO | N12E44 | |
|
||||
Solar flares on this day | ||||
| B8.38 B2.37 B5.48 B5.46 | ||||
Region 12652 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | HRX | N13E60 | |
|
||||
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| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/15 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 161 -5.4 |
| Last 30 days | 161.7 +14.5 |