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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8113 | N21 | E11 | 50 | 0550 | BETA-GAMMA | Dec 4, 1997 | Dec 11, 1997 | Dec 24, 1997 |
| № 8112 | S20 | W41 | 03 | 0010 | ALPHA | Nov 30, 1997 | Dec 7, 1997 | Dec 20, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to December 1997. The gray background is the average SSN index.
