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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1040 | N30 | W74 | 06 | 0160 | Beta | Jan 13, 2010 | Jan 20, 2010 | Feb 3, 2010 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1981 to January 2010. The gray background is the average SSN index.
