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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 2, 2009. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1027 | N24 | W89 | 01 | 0010 | Alpha | Sep 26, 2009 | Oct 3, 2009 | Oct 17, 2009 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1980 to October 2009. The gray background is the average SSN index.
