Viewing archive of Tuesday, 21 February 2017 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux |
|---|---|---|---|
| 19 -6 | 0 -1 | B1.86 | B4.41 |
Sunspot regions
Region 12637 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 10 -10 | AXX | S04E47 | |
|
||||
Region 12638 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 | 80 | DAO | N18E58 | |
|
||||
Solar flares on this day | ||||
| B3.79 B3.53 B2.73 B3.23 B3.68 B3.8 | ||||
All times in UTC
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| Last M-flare | 2024/11/13 | M1.7 |
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| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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| November 2024 | 166 -0.4 |
| Last 30 days | 163.2 +18.4 |