No image for the selected date
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 | E11 | 06 | 0010 | Beta | Feb 6, 2011 | Feb 13, 2011 | Feb 26, 2011 |
| № 1150 | S22 | W13 | 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.
