Viewing archive of Wednesday, 21 October 2015 - Sunspot regions
It appears that the image of the visible solar disk for this day in history is missing.
| Sunspot number | New regions | Background flux | Maximum flux | C | M |
|---|---|---|---|---|---|
| 73 -4 | 0 | B6.86 | M1.11 | 8 | 1 |
Sunspot regions
Region 12434 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 14 -2 | 210 -20 | DAI | S10W22 | |
|
||||
Region 12435 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 20 | HSX | S15E17 | |
|
||||
Region 12436 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 18 -2 | 240 -20 | EAI | N09E30 | |
|
||||
Solar flares on this day | ||||
| C2.49 C1.03 C2.33 C8.96 C3.93 C3.74 C2.43 C1.66 M1.1 | ||||
Region 12437 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -2 | 50 -10 | CAO | S20E46 | |
|
||||
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| Last M-flare | 2025/12/04 | M6.0 |
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| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
|---|---|
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