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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1634 | S13 | E42 | 01 | 0070 | Alpha | Dec 22, 2012 | Dec 29, 2012 | Jan 12, 2013 |
| № 1633 | S07 | E41 | 15 | 0340 | Beta | Dec 22, 2012 | Dec 29, 2012 | Jan 11, 2013 |
| № 1632 | N19 | W84 | 06 | 0050 | Beta | Dec 13, 2012 | Dec 19, 2012 | Jan 2, 2013 |
| № 1631 | N23 | W75 | 10 | 0140 | Beta | Dec 13, 2012 | Dec 20, 2012 | Jan 3, 2013 |
| № 1629 | N13 | W88 | 01 | 0080 | Alpha | Dec 12, 2012 | Dec 19, 2012 | Jan 2, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1983 to December 2012. The gray background is the average SSN index.
