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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 13, 2015. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2417 | N23 | W46 | 01 | 0010 | Alpha | Sep 10, 2015 | Sep 17, 2015 | Oct 1, 2015 |
| № 2416 | S14 | W48 | 02 | 0010 | Beta | Sep 10, 2015 | Sep 17, 2015 | Oct 1, 2015 |
| № 2415 | S21 | E55 | 07 | 0130 | Beta | Sep 18, 2015 | Sep 25, 2015 | Oct 9, 2015 |
| № 2414 | S11 | W32 | 12 | 0180 | Beta-Gamma | Sep 11, 2015 | Sep 18, 2015 | Oct 2, 2015 |
| № 2412 | S07 | W20 | 04 | 0010 | Beta | Sep 12, 2015 | Sep 19, 2015 | Oct 3, 2015 |
| № 2411 | N14 | W39 | 01 | 0010 | Alpha | Sep 11, 2015 | Sep 18, 2015 | Oct 1, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to September 2015. The gray background is the average SSN index.
