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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 4, 2012. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1585 | S17 | E54 | 07 | 0240 | Beta | Oct 9, 2012 | Oct 16, 2012 | Oct 30, 2012 |
| № 1584 | S23 | W10 | 02 | 0020 | Alpha | Oct 4, 2012 | Oct 11, 2012 | Oct 25, 2012 |
| № 1582 | S08 | W23 | 05 | 0270 | Beta | Oct 3, 2012 | Oct 10, 2012 | Oct 23, 2012 |
| № 1579 | S10 | W45 | 04 | 0180 | Beta | Oct 1, 2012 | Oct 8, 2012 | Oct 22, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to October 2012. The gray background is the average SSN index.
