Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 24, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2423 | S09 | W07 | 02 | 0010 | Beta | Sep 24, 2015 | Oct 1, 2015 | Oct 15, 2015 |
| № 2422 | S20 | E38 | 11 | 0090 | Beta | Sep 28, 2015 | Oct 5, 2015 | Oct 18, 2015 |
| № 2421 | N16 | E21 | 05 | 0050 | Beta | Sep 26, 2015 | Oct 3, 2015 | Oct 17, 2015 |
| № 2420 | N10 | E36 | 13 | 0200 | Beta-Gamma | Sep 28, 2015 | Oct 4, 2015 | Oct 18, 2015 |
| № 2418 | S15 | W60 | 03 | 0140 | Alpha | Sep 20, 2015 | Sep 27, 2015 | Oct 11, 2015 |
| № 2415 | S19 | W92 | 01 | 0010 | Beta | Sep 18, 2015 | Sep 25, 2015 | Oct 8, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to September 2015. The gray background is the average SSN index.
