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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1280 | N17 | E10 | 03 | 0020 | Beta | Aug 30, 2011 | Sep 6, 2011 | Sep 19, 2011 |
| № 1279 | N13 | E47 | 03 | 0120 | Alpha | Sep 2, 2011 | Sep 8, 2011 | Sep 22, 2011 |
| № 1277 | N17 | E38 | 01 | 0080 | Alpha | Sep 1, 2011 | Sep 8, 2011 | Sep 21, 2011 |
| № 1275 | N07 | W08 | 02 | 0030 | Beta | Aug 28, 2011 | Sep 4, 2011 | Sep 18, 2011 |
| № 1271 | N16 | W82 | 04 | 0060 | Beta | Aug 23, 2011 | Aug 30, 2011 | Sep 12, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to August 2011. The gray background is the average SSN index.
