Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 31, 2001. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9767 | S23 | E75 | 04 | 0210 | Beta-Gamma | Jan 7, 2002 | Jan 14, 2002 | Jan 27, 2002 |
| № 9766 | N05 | E64 | 03 | 0040 | Beta | Jan 6, 2002 | Jan 12, 2002 | Jan 26, 2002 |
| № 9765 | N06 | E52 | 05 | 0110 | Beta | Jan 5, 2002 | Jan 12, 2002 | Jan 25, 2002 |
| № 9764 | N13 | W09 | 06 | 0020 | Beta | Dec 31, 2001 | Jan 7, 2002 | Jan 21, 2002 |
| № 9763 | N06 | E37 | 04 | 0060 | Beta | Jan 4, 2002 | Jan 10, 2002 | Jan 24, 2002 |
| № 9761 | N10 | E23 | 01 | 0070 | Alpha | Jan 3, 2002 | Jan 9, 2002 | Jan 23, 2002 |
| № 9757 | S10 | W49 | 01 | 0000 | Alpha | Dec 28, 2001 | Jan 4, 2002 | Jan 18, 2002 |
| № 9756 | S29 | E22 | 03 | 0060 | Beta | Jan 3, 2002 | Jan 10, 2002 | Jan 24, 2002 |
| № 9755 | S04 | W01 | 10 | 0150 | Beta | Jan 1, 2002 | Jan 8, 2002 | Jan 21, 2002 |
| № 9754 | S08 | W28 | 28 | 0160 | Beta-Gamma | Dec 30, 2001 | Jan 6, 2002 | Jan 19, 2002 |
| № 9753 | S18 | W46 | 15 | 0090 | Beta | Dec 28, 2001 | Jan 4, 2002 | Jan 18, 2002 |
| № 9751 | N05 | W49 | 18 | 0230 | Beta-Gamma | Dec 28, 2001 | Jan 4, 2002 | Jan 17, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to December 2001. The gray background is the average SSN index.
