Viewing archive of Thursday, 20 December 2001 - 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 |
|---|---|---|---|---|---|
| 171 13 | 2 | C2.14 | M1.25 | 5 | 1 |
Sunspot regions
Region 9733 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 15 -11 | 310 | EAI | N13W75 | |
Region 9738 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 -6 | 40 -30 | DAO | S19W21 | |
Region 9739 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 -6 | 270 -170 | EAO | S14W82 | |
Region 9741 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -3 | 20 -20 | CAO | N07W09 | |
Solar flares on this day | ||||
| C4.51 | ||||
Region 9742 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 24 2 | 320 -30 | EAI | N12E27 | |
Solar flares on this day | ||||
| M1.25 C6.42 C3.93 C7.22 | ||||
Region 9743 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -4 | 120 -30 | HAX | S10E34 | |
Region 9745 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -1 | 30 | BXO | N18E48 | |
Region 9746 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 20 | BXO | S18E08 | |
Region 9747 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 30 | BXO | N12E71 | |
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| Last M-flare | 2024/12/22 | M1.0 |
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| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
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