Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on May 17, 2007. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 957 | S04 | W32 | 03 | 0010 | Beta | May 15, 2007 | May 22, 2007 | Jun 5, 2007 |
| № 956 | N02 | E37 | 22 | 0220 | Beta-Gamma-Delta | May 21, 2007 | May 27, 2007 | Jun 10, 2007 |
| № 955 | S07 | W75 | 01 | 0010 | Alpha | May 12, 2007 | May 19, 2007 | Jun 2, 2007 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1978 to May 2007. The gray background is the average SSN index.
