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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1298 | N16 | E54 | 04 | 0040 | Beta | Sep 20, 2011 | Sep 27, 2011 | Oct 10, 2011 |
| № 1297 | S16 | W50 | 04 | 0040 | Beta | Sep 12, 2011 | Sep 19, 2011 | Oct 3, 2011 |
| № 1296 | N26 | E57 | 03 | 0060 | Beta | Sep 20, 2011 | Sep 27, 2011 | Oct 11, 2011 |
| № 1295 | N20 | E53 | 04 | 0050 | Beta | Sep 20, 2011 | Sep 27, 2011 | Oct 11, 2011 |
| № 1294 | S17 | W00 | 07 | 0050 | Beta | Sep 16, 2011 | Sep 23, 2011 | Oct 6, 2011 |
| № 1293 | N18 | W36 | 03 | 0020 | Beta | Sep 13, 2011 | Sep 20, 2011 | Oct 4, 2011 |
| № 1292 | N08 | E26 | 02 | 0030 | Beta | Sep 18, 2011 | Sep 25, 2011 | Oct 8, 2011 |
| № 1290 | S13 | W36 | 04 | 0030 | Beta | Sep 13, 2011 | Sep 20, 2011 | Oct 4, 2011 |
| № 1289 | N24 | W23 | 09 | 0400 | Beta | Sep 14, 2011 | Sep 21, 2011 | Oct 5, 2011 |
| № 1287 | S27 | W76 | 04 | 0170 | Beta | Sep 10, 2011 | Sep 17, 2011 | Oct 1, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to September 2011. The gray background is the average SSN index.
