Viewing archive of Wednesday, 29 September 2021 - 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 |
|---|---|---|---|---|
| 74 17 | 0 -2 | B3.05 | C2.87 | 5 |
Sunspot regions
Region 12871 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 -20 | AXX | S28W66 | |
|
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Region 12877 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 14 4 | 130 100 | DAI | S18W41 | |
|
||||
Solar flares on this day | ||||
| B8.6 B5.4 C1.0 B7.4 B7.2 C2.8 C1.4 C1.7 B6.9 | ||||
Region 12878 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 0 | 0 | AXX | S23W03 | |
|
||||
Region 12880 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 18 13 | 390 380 | DKC | N30E42 | |
|
||||
Solar flares on this day | ||||
| B4.1 B3.9 C1.4 | ||||
Region 12881 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | AXX | N16W33 | |
|
||||
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| Last M-flare | 2025/12/06 | M8.1 |
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| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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