No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 15, 2012. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1459 | S15 | E81 | 01 | 0030 | Alpha | Apr 22, 2012 | Apr 29, 2012 | May 12, 2012 |
| № 1458 | N07 | E72 | 02 | 0010 | Beta | Apr 21, 2012 | Apr 28, 2012 | May 12, 2012 |
| № 1457 | N21 | E30 | 04 | 0030 | Beta | Apr 18, 2012 | Apr 25, 2012 | May 9, 2012 |
| № 1455 | N06 | W32 | 18 | 0150 | Beta | Apr 13, 2012 | Apr 20, 2012 | May 4, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to April 2012. The gray background is the average SSN index.
