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) | |
|---|---|---|---|---|---|---|---|---|
| № 735 | S07 | W06 | 17 | 0470 | Beta-Gamma-Delta | Feb 18, 2005 | Feb 24, 2005 | Mar 10, 2005 |
| № 734 | S04 | W23 | 05 | 0080 | Beta | Feb 16, 2005 | Feb 23, 2005 | Mar 9, 2005 |
| № 733 | S08 | W39 | 09 | 0170 | Alpha | Feb 15, 2005 | Feb 22, 2005 | Mar 7, 2005 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1976, January to 2005, February. Gray background - average solar cycle.
