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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 13, 2013. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1842 | N04 | W60 | 02 | 0020 | Beta | Sep 9, 2013 | Sep 16, 2013 | Sep 30, 2013 |
| № 1841 | S06 | E56 | 01 | 0040 | Beta | Sep 18, 2013 | Sep 25, 2013 | Oct 8, 2013 |
| № 1840 | S11 | W17 | 02 | 0001 | Alpha | Sep 13, 2013 | Sep 19, 2013 | Oct 3, 2013 |
| № 1839 | S12 | W50 | 01 | 0010 | Beta | Sep 10, 2013 | Sep 17, 2013 | Sep 30, 2013 |
| № 1838 | S05 | W23 | 02 | 0010 | Alpha | Sep 12, 2013 | Sep 19, 2013 | Oct 2, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to September 2013. The gray background is the average SSN index.
