No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on March 21, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 1701 | N14 | W59 | 05 | 0020 | Beta | Mar 18, 2013 | Mar 24, 2013 | Apr 7, 2013 |
| № 1700 | S13 | E13 | 01 | 0010 | Alpha | Mar 23, 2013 | Mar 30, 2013 | Apr 12, 2013 |
| № 1699 | S15 | W87 | 02 | 0020 | Beta | Mar 15, 2013 | Mar 22, 2013 | Apr 5, 2013 |
| № 1695 | N10 | W51 | 04 | 0130 | Beta | Mar 18, 2013 | Mar 25, 2013 | Apr 8, 2013 |
| № 1692 | N09 | W71 | 08 | 0340 | Beta | Mar 17, 2013 | Mar 23, 2013 | Apr 6, 2013 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1984 to March 2013. The gray background is the average SSN index.
