Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9737 | S27 | E52 | 03 | 0010 | Beta | Dec 16, 2001 | Dec 23, 2001 | Jan 6, 2002 |
| № 9736 | S09 | W27 | 03 | 0010 | Beta | Dec 10, 2001 | Dec 17, 2001 | Dec 30, 2001 |
| № 9735 | N10 | W34 | 02 | 0020 | Beta | Dec 9, 2001 | Dec 16, 2001 | Dec 30, 2001 |
| № 9734 | S12 | E65 | 01 | 0030 | Alpha | Dec 17, 2001 | Dec 24, 2001 | Jan 6, 2002 |
| № 9733 | N14 | E44 | 27 | 0360 | Beta-Gamma | Dec 15, 2001 | Dec 22, 2001 | Jan 5, 2002 |
| № 9732 | N04 | E20 | 02 | 0040 | Alpha | Dec 14, 2001 | Dec 20, 2001 | Jan 3, 2002 |
| № 9728 | N35 | W90 | 01 | 0020 | Alpha | Dec 5, 2001 | Dec 12, 2001 | Dec 26, 2001 |
| № 9727 | S21 | W24 | 31 | 0550 | Beta-Gamma-Delta | Dec 10, 2001 | Dec 17, 2001 | Dec 31, 2001 |
| № 9726 | S16 | W37 | 06 | 0020 | Beta | Dec 9, 2001 | Dec 16, 2001 | Dec 30, 2001 |
| № 9724 | N10 | W48 | 01 | 0030 | Alpha | Dec 8, 2001 | Dec 15, 2001 | Dec 29, 2001 |
| № 9723 | S05 | W81 | 01 | 0010 | Alpha | Dec 6, 2001 | Dec 13, 2001 | Dec 26, 2001 |
| № 9721 | N11 | W79 | 02 | 0100 | Beta | Dec 6, 2001 | Dec 13, 2001 | Dec 26, 2001 |
| № 9720 | S28 | W73 | 01 | 0010 | Alpha | Dec 6, 2001 | Dec 13, 2001 | Dec 27, 2001 |
| № 9718 | S06 | W89 | 03 | 0200 | Beta | Dec 5, 2001 | Dec 12, 2001 | Dec 26, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to December 2001. The gray background is the average SSN index.
