Viewing archive of Monday, 20 December 1999 - 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 |
|---|---|---|---|---|
| 149 -5 | 0 -1 | C2.29 | C6.97 | 10 |
Sunspot regions
Region 8797 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 0 -10 | AXX | S32W65 | |
Region 8798 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 41 -14 | 500 10 | EKI | S13W06 | |
Solar flares on this day | ||||
| C6.97 | ||||
Region 8803 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 13 -6 | 70 -30 | DAO | S13W16 | |
Region 8804 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 250 40 | CHO | S19E43 | |
Region 8806 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 20 7 | 890 260 | FKC | N19E50 | |
Solar flares on this day | ||||
| C6.6 C6.34 C3.7 C2.19 C3.59 | ||||
Region 8807 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 | 40 10 | CSO | N11E57 | |
Solar flares on this day | ||||
| C4.03 C4.79 | ||||
Region 8808 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 0 | BXO | S19E06 | |
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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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