Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2422 | S20 | E51 | 03 | 0010 | Beta | Sep 28, 2015 | Oct 5, 2015 | Oct 18, 2015 |
| № 2421 | N15 | E34 | 07 | 0010 | Beta | Sep 26, 2015 | Oct 3, 2015 | Oct 17, 2015 |
| № 2420 | N10 | E52 | 13 | 0280 | Beta-Gamma | Sep 28, 2015 | Oct 5, 2015 | Oct 18, 2015 |
| № 2418 | S15 | W47 | 03 | 0170 | Beta | Sep 20, 2015 | Sep 27, 2015 | Oct 11, 2015 |
| № 2415 | S18 | W79 | 03 | 0160 | 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.
