Viewing archive of Thursday, 16 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 |
|---|---|---|---|---|---|
| 153 -2 | 1 1 | B8.14 | M1.11 | 7 | 1 |
Sunspot regions
Region 8690 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 30 -1 | 300 90 | EKI | N15W48 | |
Region 8692 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 19 -4 | 160 -40 | CSO | S26W27 | |
Solar flares on this day | ||||
| C1.43 C1.67 | ||||
Region 8693 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 2 -1 | 30 | CSO | N13W29 | |
Region 8695 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 3 1 | 40 10 | CSO | N22E08 | |
Region 8699 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 23 1 | 220 -20 | EAO | N22W25 | |
Solar flares on this day | ||||
| C2.86 C1.79 | ||||
Region 8700 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 18 1 | 130 -10 | EAO | N14E45 | |
Solar flares on this day | ||||
| M1.11 | ||||
All times in UTC
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| Spotless days | |
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