Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on January 31, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9807 | S27 | E74 | 05 | 0160 | Beta | Feb 7, 2002 | Feb 14, 2002 | Feb 28, 2002 |
| № 9806 | N10 | E44 | 01 | 0040 | Alpha | Feb 4, 2002 | Feb 11, 2002 | Feb 25, 2002 |
| № 9805 | N14 | E39 | 04 | 0010 | Beta | Feb 4, 2002 | Feb 11, 2002 | Feb 24, 2002 |
| № 9803 | S24 | W84 | 02 | 0040 | Beta | Jan 26, 2002 | Feb 1, 2002 | Feb 15, 2002 |
| № 9802 | S17 | E22 | 41 | 0510 | Beta-Gamma-Delta | Feb 3, 2002 | Feb 10, 2002 | Feb 23, 2002 |
| № 9801 | S04 | E12 | 07 | 0080 | Beta | Feb 2, 2002 | Feb 9, 2002 | Feb 22, 2002 |
| № 9800 | N08 | W03 | 52 | 0600 | Beta-Gamma | Feb 1, 2002 | Feb 8, 2002 | Feb 21, 2002 |
| № 9799 | S23 | W35 | 06 | 0040 | Beta | Jan 29, 2002 | Feb 5, 2002 | Feb 19, 2002 |
| № 9787 | S07 | W89 | 02 | 0190 | Beta | Jan 25, 2002 | Feb 1, 2002 | Feb 15, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1973 to January 2002. The gray background is the average SSN index.
