Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 9, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 2320 | S12 | W13 | 16 | 0140 | Beta-Delta | Apr 9, 2015 | Apr 16, 2015 | Apr 29, 2015 |
| № 2318 | N08 | E02 | 04 | 0030 | Beta | Apr 10, 2015 | Apr 17, 2015 | Apr 30, 2015 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1986 to April 2015. The gray background is the average SSN index.
