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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1464 | N23 | E03 | 02 | 0010 | Beta | Apr 21, 2012 | Apr 28, 2012 | May 12, 2012 |
| № 1463 | S26 | W47 | 09 | 0070 | Beta | Apr 17, 2012 | Apr 24, 2012 | May 8, 2012 |
| № 1462 | S24 | W29 | 08 | 0050 | Beta | Apr 19, 2012 | Apr 26, 2012 | May 9, 2012 |
| № 1461 | N14 | E39 | 02 | 0030 | Beta | Apr 24, 2012 | May 1, 2012 | May 14, 2012 |
| № 1460 | N16 | E01 | 14 | 0180 | Beta | Apr 21, 2012 | Apr 28, 2012 | May 11, 2012 |
| № 1459 | S15 | E14 | 27 | 0180 | Beta | Apr 22, 2012 | Apr 29, 2012 | May 12, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to April 2012. The gray background is the average SSN index.
