Viewing archive of Monday, 20 February 2023 - 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 | M |
|---|---|---|---|---|---|
| 135 23 | 3 2 | C1.38 | M4.43 | 14 | 1 |
Sunspot regions
Region 13217 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 1 | 130 | HSX | S12W86 | |
|
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Region 13220 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 120 | HSX | S14W69 | |
|
||||
Region 13225 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 | 90 | DAO | S21W99 | |
|
||||
Region 13226 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 -6 | 280 -40 | CKO | N10W61 | |
|
||||
Solar flares on this day | ||||
| C2.8 C7.0 C2.5 | ||||
Region 13229 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 16 | 310 10 | EKC | N26E18 | |
|
||||
Solar flares on this day | ||||
| C3.1 C5.4 C2.8 C1.9 | ||||
Region 13230 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 110 20 | HSX | S23E43 | |
|
||||
Solar flares on this day | ||||
| C3.7 | ||||
Region 13231 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 5 | 50 20 | DSO | N21W52 | |
|
||||
Solar flares on this day | ||||
| C2.8 C3.4 C5.5 | ||||
Region 13232 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | HRX | N10W79 | |
|
||||
Region 13233 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | N14W01 | |
|
||||
Region 13234 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 | 80 | DAI | N24E76 | |
|
||||
Solar flares on this day | ||||
| C4.4 M4.4 C2.8 C2.1 | ||||
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| Last M-flare | 2025/12/04 | M6.0 |
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| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
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| December 2025 | 175.4 +83.6 |
| Last 30 days | 107.3 +14.6 |