Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 2674 | N11 | E71 | 01 | 0260 | Beta | Sep 5, 2017 | Sep 12, 2017 | Sep 26, 2017 |
| № 2673 | S08 | E63 | 01 | 0070 | Alpha | Sep 5, 2017 | Sep 11, 2017 | Sep 25, 2017 |
| № 2672 | N06 | W49 | 03 | 0060 | Beta | Aug 27, 2017 | Sep 3, 2017 | Sep 17, 2017 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1988, January to 2017, August. Gray background - average solar cycle.
