Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 15, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9667 | N24 | E73 | 01 | 0030 | Alpha | Oct 22, 2001 | Oct 29, 2001 | Nov 11, 2001 |
| № 9666 | S12 | E31 | 02 | 0010 | Beta | Oct 18, 2001 | Oct 25, 2001 | Nov 8, 2001 |
| № 9663 | S14 | E25 | 04 | 0030 | Beta | Oct 18, 2001 | Oct 25, 2001 | Nov 7, 2001 |
| № 9662 | N08 | E03 | 14 | 0140 | Beta | Oct 16, 2001 | Oct 23, 2001 | Nov 6, 2001 |
| № 9661 | N15 | E30 | 18 | 0670 | Beta-Delta | Oct 18, 2001 | Oct 25, 2001 | Nov 8, 2001 |
| № 9660 | N13 | W36 | 02 | 0030 | Alpha | Oct 13, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9659 | N04 | W36 | 03 | 0010 | Alpha | Oct 13, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9658 | S15 | E04 | 16 | 0170 | Beta | Oct 16, 2001 | Oct 23, 2001 | Nov 6, 2001 |
| № 9657 | N22 | W10 | 01 | 0010 | Alpha | Oct 15, 2001 | Oct 22, 2001 | Nov 5, 2001 |
| № 9655 | S22 | W37 | 04 | 0020 | Beta | Oct 13, 2001 | Oct 20, 2001 | Nov 3, 2001 |
| № 9653 | S22 | W54 | 03 | 0030 | Beta | Oct 12, 2001 | Oct 19, 2001 | Nov 2, 2001 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1972 to October 2001. The gray background is the average SSN index.
