No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1453 | S17 | W09 | 05 | 0020 | Beta | Apr 4, 2012 | Apr 11, 2012 | Apr 25, 2012 |
| № 1452 | N18 | E35 | 03 | 0030 | Beta | Apr 8, 2012 | Apr 14, 2012 | Apr 28, 2012 |
| № 1450 | N16 | W02 | 13 | 0060 | Beta | Apr 5, 2012 | Apr 12, 2012 | Apr 25, 2012 |
| № 1445 | S22 | W69 | 01 | 0110 | Alpha | Mar 31, 2012 | Apr 6, 2012 | Apr 20, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to April 2012. The gray background is the average SSN index.
