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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 19, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1463 | S26 | W34 | 05 | 0040 | Beta | Apr 17, 2012 | Apr 24, 2012 | May 8, 2012 |
| № 1462 | S24 | W16 | 07 | 0030 | Beta | Apr 19, 2012 | Apr 26, 2012 | May 9, 2012 |
| № 1461 | N13 | E52 | 01 | 0090 | Alpha | Apr 24, 2012 | May 1, 2012 | May 14, 2012 |
| № 1460 | N16 | E14 | 13 | 0170 | Beta | Apr 21, 2012 | Apr 28, 2012 | May 11, 2012 |
| № 1459 | S16 | E30 | 20 | 0260 | Beta | Apr 22, 2012 | Apr 29, 2012 | May 13, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to April 2012. The gray background is the average SSN index.
