Active areas
Sunspots and active regions
By the end of the day, the following active regions with sunspots could be observed on the Sun's surface
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 1161 | N11 | E52 | 03 | 0030 | Beta | Feb 20, 2011 | Feb 27, 2011 | Mar 12, 2011 |
| № 1159 | N19 | W14 | 02 | 0010 | Beta | Feb 15, 2011 | Feb 22, 2011 | Mar 8, 2011 |
| № 1158 | S21 | W14 | 36 | 0450 | Beta-Gamma | Feb 15, 2011 | Feb 22, 2011 | Mar 8, 2011 |
| № 1157 | N19 | W43 | 09 | 0040 | Beta | Feb 13, 2011 | Feb 20, 2011 | Mar 5, 2011 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1982, January to 2011, February. Gray background - average solar cycle.
