Viewing archive of Friday, 17 December 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 | M |
|---|---|---|---|---|---|
| 119 -8 | 0 -2 | B5.34 | M1.29 | 9 | 1 |
Sunspot regions
Region 12906 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 7 -2 | 50 -10 | CSO | S29W15 | |
|
||||
Region 12907 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 19 -4 | 280 100 | DHI | S18E13 | |
|
||||
Solar flares on this day | ||||
| B9.8 C1.1 | ||||
Region 12908 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 18 8 | 270 60 | DKI | S18E29 | |
|
||||
Solar flares on this day | ||||
| B8.1 | ||||
Region 12909 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 6 1 | 210 60 | DSO | S20E42 | |
|
||||
Solar flares on this day | ||||
| C2.3 | ||||
Region 12910 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 5 -1 | 30 10 | CRO | N14W29 | |
|
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Region 12911 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 1 | 80 60 | CAO | N21E54 | |
|
||||
Solar flares on this day | ||||
| M1.29 C1.5 C1.1 C1.2 C1.3 C1.4 C1.3 C1.5 | ||||
All times in UTC
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Space weather facts
| Last X-flare | 2024/12/08 | X2.2 |
| Last M-flare | 2024/12/22 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| November 2024 | 152.5 -13.9 |
| December 2024 | 103.3 -49.2 |
| Last 30 days | 115.4 -40.8 |