Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 19, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9745 | N18 | E55 | 05 | 0030 | Beta | Dec 25, 2001 | Dec 31, 2001 | Jan 14, 2002 |
| № 9744 | S05 | W08 | 02 | 0020 | Beta | Dec 20, 2001 | Dec 27, 2001 | Jan 9, 2002 |
| № 9743 | S10 | E40 | 06 | 0150 | Beta | Dec 23, 2001 | Dec 30, 2001 | Jan 13, 2002 |
| № 9742 | N09 | E32 | 22 | 0350 | Beta-Gamma | Dec 23, 2001 | Dec 30, 2001 | Jan 12, 2002 |
| № 9741 | N06 | W01 | 07 | 0040 | Beta | Dec 20, 2001 | Dec 27, 2001 | Jan 10, 2002 |
| № 9739 | S14 | W74 | 13 | 0440 | Beta | Dec 15, 2001 | Dec 22, 2001 | Jan 4, 2002 |
| № 9738 | S18 | W17 | 14 | 0070 | Beta-Gamma | Dec 19, 2001 | Dec 26, 2001 | Jan 9, 2002 |
| № 9737 | S27 | W57 | 01 | 0020 | Alpha | Dec 16, 2001 | Dec 23, 2001 | Jan 6, 2002 |
| № 9734 | S16 | W41 | 03 | 0010 | Alpha | Dec 17, 2001 | Dec 24, 2001 | Jan 7, 2002 |
| № 9733 | N13 | W70 | 26 | 0310 | Beta-Gamma | Dec 15, 2001 | Dec 22, 2001 | Jan 5, 2002 |
| № 9732 | N01 | W95 | 01 | 0030 | Alpha | Dec 13, 2001 | Dec 20, 2001 | Jan 3, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to December 2001. The gray background is the average SSN index.
