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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 7, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1289 | N24 | E80 | 01 | 0190 | Alpha | Sep 14, 2011 | Sep 21, 2011 | Oct 5, 2011 |
| № 1288 | N19 | E22 | 01 | 0000 | Alpha | Sep 10, 2011 | Sep 16, 2011 | Sep 30, 2011 |
| № 1287 | S31 | E27 | 05 | 0100 | Beta | Sep 10, 2011 | Sep 17, 2011 | Oct 1, 2011 |
| № 1283 | N14 | W16 | 23 | 0200 | Beta-Gamma-Delta | Sep 7, 2011 | Sep 13, 2011 | Sep 27, 2011 |
| № 1281 | S18 | W49 | 02 | 0010 | Beta | Sep 4, 2011 | Sep 11, 2011 | Sep 25, 2011 |
| № 1277 | N18 | W91 | 01 | 0060 | Alpha | Sep 1, 2011 | Sep 8, 2011 | Sep 21, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to September 2011. The gray background is the average SSN index.
