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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1582 | S13 | E56 | 01 | 0260 | Alpha | Oct 3, 2012 | Oct 10, 2012 | Oct 24, 2012 |
| № 1581 | N22 | W23 | 02 | 0005 | Alpha | Sep 27, 2012 | Oct 4, 2012 | Oct 18, 2012 |
| № 1580 | N17 | E41 | 03 | 0020 | Beta | Oct 2, 2012 | Oct 9, 2012 | Oct 23, 2012 |
| № 1579 | S10 | E34 | 02 | 0160 | Alpha | Oct 1, 2012 | Oct 8, 2012 | Oct 22, 2012 |
| № 1578 | N21 | W30 | 01 | 0005 | Alpha | Sep 27, 2012 | Oct 4, 2012 | Oct 17, 2012 |
| № 1577 | N09 | W25 | 03 | 0015 | Beta | Sep 27, 2012 | Oct 4, 2012 | Oct 17, 2012 |
| № 1576 | S20 | W34 | 01 | 0005 | Alpha | Sep 26, 2012 | Oct 3, 2012 | Oct 17, 2012 |
| № 1575 | N09 | W45 | 04 | 0130 | Alpha | Sep 26, 2012 | Oct 2, 2012 | Oct 16, 2012 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to September 2012. The gray background is the average SSN index.
