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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 3, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1283 | N13 | E39 | 11 | 0200 | Beta | Sep 7, 2011 | Sep 14, 2011 | Sep 27, 2011 |
| № 1282 | N25 | W38 | 12 | 0170 | Beta | Sep 1, 2011 | Sep 8, 2011 | Sep 22, 2011 |
| № 1281 | S20 | E03 | 10 | 0110 | Beta | Sep 4, 2011 | Sep 11, 2011 | Sep 25, 2011 |
| № 1280 | N11 | W64 | 05 | 0080 | Beta | Aug 30, 2011 | Sep 6, 2011 | Sep 19, 2011 |
| № 1279 | N14 | W30 | 04 | 0060 | Alpha | Sep 2, 2011 | Sep 8, 2011 | Sep 22, 2011 |
| № 1277 | N19 | W38 | 01 | 0030 | Alpha | Sep 1, 2011 | Sep 8, 2011 | Sep 22, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to September 2011. The gray background is the average SSN index.
