Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9753 | S20 | E69 | 01 | 0030 | Alpha | Dec 29, 2001 | Jan 5, 2002 | Jan 19, 2002 |
| № 9752 | S14 | W17 | 01 | 0010 | Alpha | Dec 23, 2001 | Dec 29, 2001 | Jan 12, 2002 |
| № 9751 | N04 | E57 | 03 | 0330 | Beta | Dec 28, 2001 | Jan 4, 2002 | Jan 17, 2002 |
| № 9750 | S15 | W75 | 04 | 0040 | Beta | Dec 18, 2001 | Dec 25, 2001 | Jan 8, 2002 |
| № 9749 | S08 | E45 | 03 | 0040 | Beta | Dec 27, 2001 | Jan 3, 2002 | Jan 17, 2002 |
| № 9748 | S11 | E09 | 18 | 0080 | Beta | Dec 25, 2001 | Dec 31, 2001 | Jan 14, 2002 |
| № 9747 | N11 | E32 | 08 | 0070 | Beta | Dec 26, 2001 | Jan 2, 2002 | Jan 16, 2002 |
| № 9746 | S17 | W30 | 02 | 0010 | Beta | Dec 22, 2001 | Dec 28, 2001 | Jan 11, 2002 |
| № 9745 | N17 | E08 | 09 | 0060 | Beta | Dec 24, 2001 | Dec 31, 2001 | Jan 14, 2002 |
| № 9743 | S09 | W05 | 06 | 0130 | Beta | Dec 23, 2001 | Dec 30, 2001 | Jan 13, 2002 |
| № 9742 | N10 | W14 | 55 | 0680 | Beta-Gamma | Dec 23, 2001 | Dec 30, 2001 | Jan 12, 2002 |
| № 9741 | N04 | W55 | 04 | 0030 | Beta | Dec 20, 2001 | Dec 26, 2001 | Jan 9, 2002 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to December 2001. The gray background is the average SSN index.
