Viewing archive of Thursday, 7 September 2017 - Sunspot regions
Courtesy of SDO, SOHO (NASA) and the [AIA, EVE, and/or HMI] consortium.
| Sunspot number | New regions | Background flux | Maximum flux | C | M | X |
|---|---|---|---|---|---|---|
| 94 15 | 1 1 | C1.71 | X1.99 | 7 | 4 | 2 |
Sunspot regions
Region 12673 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 24 -9 | 960 80 | EKC | S10W43 | |
|
||||
Solar flares on this day | ||||
| M3.57 M1.18 C3.87 M2.13 X1.09 C4.39 X1.99 C7.49 C6.5 C3.82 C7.8 M5.61 | ||||
Region 12674 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 10 -13 | 680 | FKI | N14W28 | |
|
||||
Region 12675 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 | BXO | S07W97 | |
Region 12677 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 1 | 10 -10 | AXX | N18E25 | |
|
||||
Solar flares on this day | ||||
| C3.87 | ||||
Region 12678 |
||||
|---|---|---|---|---|
| Number of sunspots |
Size | Class Magn. | Class Spot | Location |
| 4 2 | 40 30 | CSO | N11E31 | |
|
||||
All times in UTC
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| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/02 | M3.5 |
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| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
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|---|---|
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| April 2026 | 130 +51.8 |
| Last 30 days | 92.6 +25.1 |
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