Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 21, 2010. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1118 | N14 | E47 | 02 | 0000 | Alpha | Oct 26, 2010 | Nov 1, 2010 | Nov 15, 2010 |
| № 1117 | N24 | E60 | 02 | 0070 | Alpha | Oct 27, 2010 | Nov 3, 2010 | Nov 16, 2010 |
| № 1115 | S31 | W01 | 02 | 0110 | Beta | Oct 22, 2010 | Oct 29, 2010 | Nov 12, 2010 |
| № 1113 | N16 | W17 | 03 | 0110 | Beta | Oct 21, 2010 | Oct 28, 2010 | Nov 10, 2010 |
| № 1112 | S20 | W84 | 02 | 0010 | Alpha | Oct 16, 2010 | Oct 22, 2010 | Nov 5, 2010 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1981 to October 2010. The gray background is the average SSN index.
