Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 4, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9727 | S22 | E70 | 03 | 0120 | Beta | Dec 10, 2001 | Dec 17, 2001 | Dec 31, 2001 |
| № 9726 | S16 | E57 | 02 | 0070 | Beta | Dec 9, 2001 | Dec 16, 2001 | Dec 30, 2001 |
| № 9725 | S10 | W57 | 06 | 0030 | Beta | Dec 1, 2001 | Dec 7, 2001 | Dec 21, 2001 |
| № 9724 | N10 | E49 | 03 | 0060 | Beta | Dec 9, 2001 | Dec 15, 2001 | Dec 29, 2001 |
| № 9723 | S04 | E18 | 02 | 0010 | Alpha | Dec 6, 2001 | Dec 13, 2001 | Dec 27, 2001 |
| № 9721 | N13 | E18 | 06 | 0190 | Beta | Dec 6, 2001 | Dec 13, 2001 | Dec 27, 2001 |
| № 9720 | S18 | E07 | 11 | 0040 | Beta | Dec 5, 2001 | Dec 12, 2001 | Dec 26, 2001 |
| № 9718 | S07 | E05 | 30 | 0650 | Beta-Gamma | Dec 5, 2001 | Dec 12, 2001 | Dec 26, 2001 |
| № 9717 | N04 | E02 | 11 | 0210 | Beta-Gamma | Dec 5, 2001 | Dec 12, 2001 | Dec 25, 2001 |
| № 9716 | S05 | W34 | 19 | 0080 | Beta | Dec 2, 2001 | Dec 9, 2001 | Dec 23, 2001 |
| № 9715 | N04 | W47 | 27 | 0690 | Beta-Gamma | Dec 1, 2001 | Dec 8, 2001 | Dec 22, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to December 2001. The gray background is the average SSN index.
