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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on November 18, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8109 | S18 | E51 | 06 | 0030 | BETA | Nov 23, 1997 | Nov 30, 1997 | Dec 13, 1997 |
| № 8108 | N21 | E29 | 36 | 0420 | BETA-GAMMA-DELTA | Nov 21, 1997 | Nov 28, 1997 | Dec 12, 1997 |
| № 8107 | S24 | W82 | 02 | 0000 | ALPHA | Nov 13, 1997 | Nov 20, 1997 | Dec 4, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to November 1997. The gray background is the average SSN index.
