Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 4, 2011. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1152 | S18 | E13 | 06 | 0010 | Beta | Feb 6, 2011 | Feb 13, 2011 | Feb 26, 2011 |
| № 1150 | S22 | W11 | 06 | 0010 | Beta | Feb 4, 2011 | Feb 11, 2011 | Feb 25, 2011 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1982 to February 2011. The gray background is the average SSN index.
