Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 8, 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 | N23 | E68 | 03 | 0280 | Beta | Sep 14, 2011 | Sep 21, 2011 | Oct 5, 2011 |
| № 1287 | S30 | E11 | 01 | 0100 | Alpha | Sep 10, 2011 | Sep 17, 2011 | Oct 1, 2011 |
| № 1283 | N14 | W30 | 14 | 0230 | Beta-Gamma-Delta | Sep 7, 2011 | Sep 13, 2011 | Sep 27, 2011 |
| № 1281 | S15 | W57 | 02 | 0010 | Beta | Sep 5, 2011 | Sep 11, 2011 | Sep 25, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to September 2011. The gray background is the average SSN index.
