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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 12, 2005. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 750 | S07 | W00 | 07 | 0090 | Beta | Apr 13, 2005 | Apr 20, 2005 | May 3, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to April 2005. The gray background is the average SSN index.
