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) | |
|---|---|---|---|---|---|---|---|---|
| № 1280 | N17 | E26 | 03 | 0030 | Beta | Aug 30, 2011 | Sep 6, 2011 | Sep 19, 2011 |
| № 1279 | N13 | E63 | 01 | 0090 | Alpha | Sep 2, 2011 | Sep 8, 2011 | Sep 22, 2011 |
| № 1278 | N16 | W51 | 03 | 0020 | Beta | Aug 24, 2011 | Aug 31, 2011 | Sep 13, 2011 |
| № 1277 | N17 | E52 | 01 | 0080 | Alpha | Sep 1, 2011 | Sep 8, 2011 | Sep 21, 2011 |
| № 1275 | N07 | E07 | 02 | 0030 | Beta | Aug 28, 2011 | Sep 4, 2011 | Sep 18, 2011 |
| № 1271 | N17 | W67 | 06 | 0080 | Beta | Aug 23, 2011 | Aug 30, 2011 | Sep 12, 2011 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1982, January to 2011, August. Gray background - average solar cycle.
