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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1469 | S24 | E29 | 06 | 0050 | Beta | May 1, 2012 | May 8, 2012 | May 22, 2012 |
| № 1468 | N09 | W29 | 06 | 0080 | Beta | Apr 27, 2012 | May 4, 2012 | May 17, 2012 |
| № 1467 | N11 | E33 | 04 | 0050 | Beta | May 1, 2012 | May 8, 2012 | May 22, 2012 |
| № 1466 | N11 | W37 | 08 | 0090 | Beta | Apr 26, 2012 | May 3, 2012 | May 17, 2012 |
| № 1465 | S17 | W52 | 11 | 0180 | Beta-Gamma-Delta | Apr 25, 2012 | May 2, 2012 | May 16, 2012 |
| № 1459 | S19 | W87 | 04 | 0030 | 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.
