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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1566 | N24 | E78 | 01 | 0060 | Alpha | Sep 11, 2012 | Sep 18, 2012 | Oct 2, 2012 |
| № 1565 | N11 | E23 | 06 | 0040 | Beta | Sep 7, 2012 | Sep 13, 2012 | Sep 27, 2012 |
| № 1564 | S16 | E28 | 19 | 0220 | Beta-Gamma | Sep 7, 2012 | Sep 14, 2012 | Sep 27, 2012 |
| № 1563 | S26 | E17 | 05 | 0070 | Beta | Sep 6, 2012 | Sep 13, 2012 | Sep 27, 2012 |
| № 1562 | S19 | W05 | 03 | 0010 | Beta | Sep 4, 2012 | Sep 11, 2012 | Sep 25, 2012 |
| № 1561 | S10 | W38 | 03 | 0010 | Alpha | Sep 2, 2012 | Sep 9, 2012 | Sep 22, 2012 |
| № 1560 | N03 | W31 | 23 | 0350 | Beta-Gamma-Delta | Sep 3, 2012 | Sep 9, 2012 | Sep 23, 2012 |
| № 1558 | N13 | W21 | 03 | 0010 | Alpha | Sep 3, 2012 | Sep 10, 2012 | Sep 24, 2012 |
| № 1553 | S21 | W80 | 03 | 0090 | Beta | Aug 30, 2012 | Sep 6, 2012 | Sep 19, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to September 2012. The gray background is the average SSN index.
