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) | |
|---|---|---|---|---|---|---|---|---|
| № 2670 | S05 | E45 | 03 | 0150 | Alpha | Aug 8, 2017 | Aug 15, 2017 | Aug 29, 2017 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1988, January to 2017, August. Gray background - average solar cycle.
