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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2410 | S19 | E25 | 02 | 0010 | Beta | Sep 7, 2015 | Sep 14, 2015 | Sep 27, 2015 |
| № 2409 | N03 | E28 | 05 | 0030 | Beta | Sep 7, 2015 | Sep 14, 2015 | Sep 27, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to September 2015. The gray background is the average SSN index.
