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) | |
|---|---|---|---|---|---|---|---|---|
| № 1287 | S32 | E53 | 03 | 0080 | Beta | Sep 10, 2011 | Sep 17, 2011 | Oct 1, 2011 |
| № 1286 | N20 | W73 | 06 | 0080 | Beta | Aug 31, 2011 | Sep 7, 2011 | Sep 21, 2011 |
| № 1283 | N13 | E13 | 21 | 0190 | Beta | Sep 7, 2011 | Sep 14, 2011 | Sep 27, 2011 |
| № 1282 | N24 | W64 | 06 | 0090 | Beta | Sep 1, 2011 | Sep 8, 2011 | Sep 22, 2011 |
| № 1281 | S19 | W22 | 05 | 0070 | Beta | Sep 4, 2011 | Sep 11, 2011 | Sep 25, 2011 |
| № 1280 | N13 | W89 | 02 | 0010 | Beta | Aug 30, 2011 | Sep 6, 2011 | Sep 20, 2011 |
| № 1277 | N18 | W64 | 01 | 0020 | Alpha | Sep 1, 2011 | Sep 8, 2011 | Sep 22, 2011 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1982, January to 2011, September. Gray background - average solar cycle.
