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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 15, 1997. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8096 | N14 | E60 | 03 | 0020 | BETA | Oct 21, 1997 | Oct 28, 1997 | Nov 10, 1997 |
| № 8094 | N21 | W76 | 01 | 0000 | ALPHA | Oct 10, 1997 | Oct 17, 1997 | Oct 31, 1997 |
| № 8093 | N31 | W25 | 10 | 0090 | BETA | Oct 14, 1997 | Oct 21, 1997 | Nov 5, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to October 1997. The gray background is the average SSN index.
