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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 17, 2010. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1048 | N21 | E34 | 05 | 0010 | Beta | Feb 21, 2010 | Feb 28, 2010 | Mar 13, 2010 |
| № 1046 | N22 | W49 | 03 | 0040 | Beta | Feb 14, 2010 | Feb 21, 2010 | Mar 7, 2010 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1981 to February 2010. The gray background is the average SSN index.
