Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 13, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9664 | N07 | E16 | 01 | 0010 | Alpha | Oct 15, 2001 | Oct 22, 2001 | Nov 5, 2001 |
| № 9663 | S14 | E52 | 01 | 0030 | Alpha | Oct 18, 2001 | Oct 25, 2001 | Nov 7, 2001 |
| № 9662 | N08 | E29 | 09 | 0070 | Beta | Oct 16, 2001 | Oct 23, 2001 | Nov 6, 2001 |
| № 9661 | N14 | E55 | 08 | 0760 | Beta-Delta | Oct 18, 2001 | Oct 25, 2001 | Nov 8, 2001 |
| № 9660 | N13 | W06 | 08 | 0050 | Beta | Oct 14, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9658 | S14 | E29 | 17 | 0190 | Beta | Oct 16, 2001 | Oct 23, 2001 | Nov 6, 2001 |
| № 9657 | N23 | E18 | 04 | 0030 | Beta | Oct 15, 2001 | Oct 22, 2001 | Nov 5, 2001 |
| № 9655 | S21 | W14 | 05 | 0060 | Beta | Oct 13, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9653 | S22 | W27 | 13 | 0130 | Beta | Oct 12, 2001 | Oct 19, 2001 | Nov 2, 2001 |
| № 9650 | S12 | W46 | 02 | 0010 | Beta | Oct 11, 2001 | Oct 17, 2001 | Oct 31, 2001 |
| № 9648 | S06 | W60 | 01 | 0010 | Alpha | Oct 9, 2001 | Oct 16, 2001 | Oct 30, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to October 2001. The gray background is the average SSN index.
