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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 10, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8085 | S25 | E40 | 23 | 0650 | BETA-GAMMA | Sep 14, 1997 | Sep 21, 1997 | Oct 5, 1997 |
| № 8084 | N22 | E13 | 19 | 0170 | BETA | Sep 12, 1997 | Sep 19, 1997 | Oct 3, 1997 |
| № 8083 | S28 | W22 | 15 | 0540 | BETA | Sep 9, 1997 | Sep 16, 1997 | Sep 30, 1997 |
| № 8082 | N21 | W31 | 04 | 0010 | BETA | Sep 9, 1997 | Sep 16, 1997 | Sep 29, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to September 1997. The gray background is the average SSN index.
