Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9677 | N20 | E45 | 02 | 0030 | Beta | Oct 28, 2001 | Nov 4, 2001 | Nov 17, 2001 |
| № 9676 | N15 | E42 | 02 | 0060 | Beta | Oct 27, 2001 | Nov 3, 2001 | Nov 17, 2001 |
| № 9675 | S15 | E41 | 04 | 0040 | Beta | Oct 27, 2001 | Nov 3, 2001 | Nov 17, 2001 |
| № 9674 | S09 | W11 | 06 | 0020 | Beta | Oct 23, 2001 | Oct 30, 2001 | Nov 13, 2001 |
| № 9673 | N02 | E15 | 09 | 0140 | Beta | Oct 25, 2001 | Nov 1, 2001 | Nov 15, 2001 |
| № 9672 | S18 | E10 | 17 | 0440 | Beta-Gamma-Delta | Oct 25, 2001 | Nov 1, 2001 | Nov 15, 2001 |
| № 9671 | N13 | W42 | 06 | 0050 | Beta | Oct 21, 2001 | Oct 28, 2001 | Nov 10, 2001 |
| № 9670 | S18 | W10 | 20 | 0470 | Beta-Gamma | Oct 23, 2001 | Oct 30, 2001 | Nov 13, 2001 |
| № 9669 | N14 | W27 | 24 | 0120 | Beta | Oct 22, 2001 | Oct 29, 2001 | Nov 12, 2001 |
| № 9667 | N25 | W39 | 01 | 0010 | Alpha | Oct 21, 2001 | Oct 28, 2001 | Nov 11, 2001 |
| № 9661 | N14 | W79 | 06 | 0390 | Beta | Oct 18, 2001 | Oct 25, 2001 | Nov 8, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to October 2001. The gray background is the average SSN index.
