Viewing archive of Friday, 17 September 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 |
|---|---|---|---|---|---|
| 144 -9 | 2 1 | B8.14 | M3.06 | 7 | 2 |
Sunspot regions
Region 8690 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 23 -7 | 440 140 | EKI | N16W62 | |
Solar flares on this day | ||||
| M3.06 | ||||
Region 8692 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 16 -3 | 170 10 | ESO | S26W41 | |
Solar flares on this day | ||||
| C4.46 | ||||
Region 8693 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 -1 | 30 | HSX | N13W44 | |
Region 8695 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 | 30 -10 | CSO | N21W04 | |
Region 8699 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 13 -10 | 220 | ESO | N22W39 | |
Solar flares on this day | ||||
| C2.16 | ||||
Region 8700 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 25 7 | 140 10 | EAO | N14E31 | |
Solar flares on this day | ||||
| C3.09 C2.51 | ||||
Region 8702 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 | 0 | BXO | N22E28 | |
All times in UTC
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| Spotless days | |
|---|---|
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