Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9741 | N06 | E56 | 02 | 0010 | Alpha | Dec 20, 2001 | Dec 27, 2001 | Jan 10, 2002 |
| № 9740 | S06 | E42 | 01 | 0010 | Alpha | Dec 19, 2001 | Dec 26, 2001 | Jan 8, 2002 |
| № 9739 | S13 | W15 | 09 | 0060 | Beta | Dec 15, 2001 | Dec 22, 2001 | Jan 4, 2002 |
| № 9738 | S20 | E40 | 07 | 0060 | Beta | Dec 19, 2001 | Dec 26, 2001 | Jan 9, 2002 |
| № 9737 | S28 | W00 | 08 | 0040 | Beta | Dec 16, 2001 | Dec 23, 2001 | Jan 6, 2002 |
| № 9736 | S10 | W82 | 03 | 0060 | Beta | Dec 10, 2001 | Dec 17, 2001 | Dec 30, 2001 |
| № 9734 | S13 | E12 | 01 | 0010 | Alpha | Dec 17, 2001 | Dec 24, 2001 | Jan 6, 2002 |
| № 9733 | N14 | W10 | 58 | 0450 | Beta-Gamma-Delta | Dec 15, 2001 | Dec 22, 2001 | Jan 5, 2002 |
| № 9732 | N03 | W33 | 01 | 0060 | Alpha | Dec 14, 2001 | Dec 20, 2001 | Jan 3, 2002 |
| № 9727 | S21 | W77 | 12 | 0550 | Beta-Gamma-Delta | Dec 10, 2001 | Dec 17, 2001 | Dec 31, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to December 2001. The gray background is the average SSN index.
