Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 21, 2002. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9837 | N07 | E67 | 01 | 0060 | Alpha | Feb 27, 2002 | Mar 6, 2002 | Mar 20, 2002 |
| № 9836 | S02 | W28 | 02 | 0010 | Beta | Feb 20, 2002 | Feb 27, 2002 | Mar 12, 2002 |
| № 9835 | S09 | W63 | 04 | 0040 | Beta | Feb 17, 2002 | Feb 24, 2002 | Mar 10, 2002 |
| № 9832 | S15 | W05 | 01 | 0010 | Alpha | Feb 22, 2002 | Mar 1, 2002 | Mar 14, 2002 |
| № 9830 | S20 | W09 | 49 | 0530 | Beta-Gamma-Delta | Feb 21, 2002 | Feb 28, 2002 | Mar 14, 2002 |
| № 9829 | S06 | W03 | 01 | 0000 | Alpha | Feb 22, 2002 | Mar 1, 2002 | Mar 14, 2002 |
| № 9828 | S14 | W73 | 02 | 0010 | Alpha | Feb 17, 2002 | Feb 23, 2002 | Mar 9, 2002 |
| № 9825 | N16 | W83 | 06 | 0150 | Beta-Gamma | Feb 16, 2002 | Feb 23, 2002 | Mar 8, 2002 |
| № 9824 | N24 | W76 | 01 | 0100 | Alpha | Feb 16, 2002 | Feb 23, 2002 | Mar 9, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to February 2002. The gray background is the average SSN index.
