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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on November 21, 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 | S19 | E11 | 06 | 0050 | BETA | Nov 23, 1997 | Nov 30, 1997 | Dec 13, 1997 |
| № 8108 | N19 | W11 | 31 | 0260 | BETA-GAMMA | Nov 21, 1997 | Nov 28, 1997 | Dec 12, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to November 1997. The gray background is the average SSN index.
