Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 765 | N09 | E53 | 01 | 0020 | Alpha | May 26, 2005 | Jun 2, 2005 | Jun 15, 2005 |
| № 759 | N12 | W86 | 01 | 0150 | Alpha | May 15, 2005 | May 22, 2005 | Jun 5, 2005 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1976 to May 2005. The gray background is the average SSN index.
