Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 13, 2005. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 735 | S08 | E47 | 01 | 0380 | Alpha | Feb 18, 2005 | Feb 24, 2005 | Mar 10, 2005 |
| № 734 | S05 | E31 | 01 | 0060 | Alpha | Feb 16, 2005 | Feb 23, 2005 | Mar 9, 2005 |
| № 733 | S08 | E14 | 02 | 0250 | Alpha | Feb 15, 2005 | Feb 22, 2005 | Mar 7, 2005 |
| № 732 | N11 | W17 | 14 | 0090 | Beta-Gamma | Feb 13, 2005 | Feb 20, 2005 | Mar 5, 2005 |
| № 730 | S20 | W32 | 04 | 0010 | Alpha | Feb 12, 2005 | Feb 18, 2005 | Mar 4, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to February 2005. The gray background is the average SSN index.
