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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1310 | S33 | E16 | 03 | 0010 | Beta | Oct 6, 2011 | Oct 13, 2011 | Oct 28, 2011 |
| № 1309 | N24 | E55 | 06 | 0120 | Beta | Oct 9, 2011 | Oct 16, 2011 | Oct 30, 2011 |
| № 1307 | N13 | E05 | 01 | 0015 | Alpha | Oct 5, 2011 | Oct 12, 2011 | Oct 26, 2011 |
| № 1306 | N14 | W20 | 01 | 0030 | Alpha | Oct 3, 2011 | Oct 10, 2011 | Oct 24, 2011 |
| № 1305 | N11 | W36 | 10 | 0250 | Beta | Oct 2, 2011 | Oct 9, 2011 | Oct 23, 2011 |
| № 1302 | N13 | W69 | 10 | 0320 | Beta | Sep 30, 2011 | Oct 7, 2011 | Oct 20, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to October 2011. The gray background is the average SSN index.
