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 | S08 | E60 | 03 | 0410 | Beta | Feb 18, 2005 | Feb 24, 2005 | Mar 10, 2005 |
| № 734 | S04 | E44 | 01 | 0060 | Alpha | Feb 16, 2005 | Feb 23, 2005 | Mar 9, 2005 |
| № 733 | S08 | E31 | 03 | 0340 | Alpha | Feb 15, 2005 | Feb 22, 2005 | Mar 8, 2005 |
| № 732 | N11 | W04 | 14 | 0040 | Beta-Gamma | Feb 13, 2005 | Feb 19, 2005 | Mar 5, 2005 |
| № 730 | S20 | W19 | 02 | 0050 | Alpha | Feb 12, 2005 | Feb 18, 2005 | Mar 4, 2005 |
Solar cycle progression
Average monthly sunspot number (SSN) from 1976, January to 2005, February. Gray background - average solar cycle.
