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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 8, 2013. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1690 | N23 | E57 | 01 | 0030 | Alpha | Mar 13, 2013 | Mar 20, 2013 | Apr 3, 2013 |
| № 1689 | S20 | E28 | 08 | 0150 | Beta | Mar 11, 2013 | Mar 18, 2013 | Apr 1, 2013 |
| № 1688 | S17 | W02 | 02 | 0010 | Alpha | Mar 9, 2013 | Mar 16, 2013 | Mar 29, 2013 |
| № 1687 | N08 | E18 | 03 | 0010 | Beta | Mar 10, 2013 | Mar 17, 2013 | Mar 31, 2013 |
| № 1686 | S12 | W84 | 05 | 0120 | Beta-Gamma | Mar 3, 2013 | Mar 9, 2013 | Mar 23, 2013 |
| № 1683 | S15 | W23 | 01 | 0000 | Alpha | Mar 7, 2013 | Mar 14, 2013 | Mar 28, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to March 2013. The gray background is the average SSN index.
