Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on February 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9815 | N12 | E70 | 01 | 0080 | Alpha | Feb 10, 2002 | Feb 17, 2002 | Mar 3, 2002 |
| № 9814 | N07 | E15 | 04 | 0010 | Beta | Feb 6, 2002 | Feb 13, 2002 | Feb 26, 2002 |
| № 9813 | S24 | W13 | 02 | 0010 | Alpha | Feb 4, 2002 | Feb 11, 2002 | Feb 25, 2002 |
| № 9812 | N12 | W29 | 05 | 0030 | Beta | Feb 3, 2002 | Feb 10, 2002 | Feb 23, 2002 |
| № 9811 | S27 | E70 | 04 | 0120 | Beta | Feb 10, 2002 | Feb 17, 2002 | Mar 3, 2002 |
| № 9810 | N09 | E55 | 03 | 0200 | Beta | Feb 9, 2002 | Feb 16, 2002 | Mar 2, 2002 |
| № 9809 | S06 | E29 | 05 | 0060 | Beta | Feb 7, 2002 | Feb 14, 2002 | Feb 27, 2002 |
| № 9808 | N17 | E15 | 10 | 0030 | Beta | Feb 6, 2002 | Feb 13, 2002 | Feb 27, 2002 |
| № 9807 | S27 | E26 | 26 | 0120 | Beta | Feb 7, 2002 | Feb 14, 2002 | Feb 28, 2002 |
| № 9806 | N11 | W08 | 04 | 0040 | Beta | Feb 4, 2002 | Feb 11, 2002 | Feb 25, 2002 |
| № 9802 | S14 | W31 | 54 | 0560 | Beta-Gamma-Delta | Feb 3, 2002 | Feb 9, 2002 | Feb 23, 2002 |
| № 9801 | S04 | W41 | 01 | 0080 | Alpha | Feb 2, 2002 | Feb 9, 2002 | Feb 22, 2002 |
| № 9800 | N10 | W58 | 24 | 0320 | Beta-Gamma | Feb 1, 2002 | Feb 7, 2002 | Feb 21, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to February 2002. The gray background is the average SSN index.
