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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 23, 2011. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 1302 | N11 | E74 | 02 | 0480 | Beta-Gamma | Sep 30, 2011 | Oct 6, 2011 | Oct 20, 2011 |
| № 1301 | N19 | E29 | 12 | 0120 | Beta | Sep 26, 2011 | Oct 3, 2011 | Oct 17, 2011 |
| № 1299 | S19 | W64 | 02 | 0010 | Beta | Sep 19, 2011 | Sep 26, 2011 | Oct 10, 2011 |
| № 1296 | N26 | W44 | 01 | 0010 | Alpha | Sep 21, 2011 | Sep 28, 2011 | Oct 12, 2011 |
| № 1295 | N22 | W62 | 19 | 0350 | Beta-Gamma | Sep 19, 2011 | Sep 26, 2011 | Oct 10, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to September 2011. The gray background is the average SSN index.
