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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 9, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1691 | N12 | E46 | 03 | 0020 | Beta | Mar 13, 2013 | Mar 20, 2013 | Apr 3, 2013 |
| № 1690 | N23 | E42 | 02 | 0030 | Alpha | Mar 13, 2013 | Mar 20, 2013 | Apr 3, 2013 |
| № 1689 | S19 | E15 | 12 | 0100 | Beta | Mar 11, 2013 | Mar 18, 2013 | Apr 1, 2013 |
| № 1683 | S15 | W37 | 02 | 0010 | 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.
