Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 800 | N16 | E48 | 04 | 0030 | Beta | Aug 24, 2005 | Aug 31, 2005 | Sep 14, 2005 |
| № 799 | S10 | W68 | 02 | 0020 | Alpha | Aug 16, 2005 | Aug 23, 2005 | Sep 5, 2005 |
| № 798 | S10 | W17 | 14 | 0160 | Beta-Gamma | Aug 20, 2005 | Aug 26, 2005 | Sep 9, 2005 |
| № 797 | S13 | W50 | 01 | 0110 | Alpha | Aug 17, 2005 | Aug 24, 2005 | Sep 6, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to August 2005. The gray background is the average SSN index.
