Viewing archive of Wednesday, 20 October 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 | M |
|---|---|---|---|---|---|
| 193 24 | 2 1 | C1.2 | M2.46 | 3 | 1 |
Sunspot regions
Region 8728 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 1 | 130 -40 | DAO | N24W70 | |
Region 8731 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 63 28 | 640 -340 | FKC | N13W44 | |
Region 8732 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 29 10 | 190 10 | FAI | N21W53 | |
Solar flares on this day | ||||
| C1.9 | ||||
Region 8735 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 -2 | 20 -10 | CRO | N19W06 | |
Region 8736 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 1 | 0 | BXO | S21E07 | |
Region 8737 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 8 | 50 | CAO | S15E14 | |
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| Spotless days | |
|---|---|
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| Monthly mean Sunspot Number | |
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