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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 5, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8114 | S30 | W11 | 01 | 0000 | ALPHA | Dec 5, 1997 | Dec 12, 1997 | Dec 27, 1997 |
| № 8113 | N21 | W31 | 26 | 0420 | BETA | Dec 4, 1997 | Dec 11, 1997 | Dec 25, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to December 1997. The gray background is the average SSN index.
