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) | |
|---|---|---|---|---|---|---|---|---|
| № 2408 | S12 | W76 | 01 | 0000 | alpha | Aug 26, 2015 | Sep 2, 2015 | Sep 16, 2015 |
| № 2407 | N15 | W61 | 05 | 0020 | beta | Aug 27, 2015 | Sep 3, 2015 | Sep 17, 2015 |
| № 2406 | N03 | E10 | 03 | 0020 | beta | Sep 2, 2015 | Sep 8, 2015 | Sep 22, 2015 |
| № 2405 | S21 | W02 | 01 | 0000 | alpha | Sep 1, 2015 | Sep 8, 2015 | Sep 21, 2015 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1986, January to 2015, September. Gray background - average solar cycle.
