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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 2, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8091 | N22 | E74 | 06 | 0020 | BETA | Oct 9, 1997 | Oct 15, 1997 | Oct 29, 1997 |
| № 8090 | S27 | E57 | 01 | 0060 | ALPHA | Oct 7, 1997 | Oct 14, 1997 | Oct 28, 1997 |
| № 8088 | S29 | W82 | 01 | 0080 | ALPHA | Sep 26, 1997 | Oct 3, 1997 | Oct 18, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to October 1997. The gray background is the average SSN index.
