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) | |
|---|---|---|---|---|---|---|---|---|
| № 2675 | S08 | W36 | 04 | 0030 | beta | Aug 30, 2017 | Sep 6, 2017 | Sep 20, 2017 |
| № 2674 | N13 | E39 | 15 | 0770 | beta-gamma | Sep 5, 2017 | Sep 12, 2017 | Sep 25, 2017 |
| № 2673 | S08 | E24 | 01 | 0080 | alpha | Sep 4, 2017 | Sep 11, 2017 | Sep 24, 2017 |
| № 2672 | N08 | W83 | 02 | 0060 | beta | Aug 27, 2017 | Sep 2, 2017 | Sep 16, 2017 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1988, January to 2017, September. Gray background - average solar cycle.
