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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 8, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8117 | N23 | E39 | 03 | 0010 | BETA | Dec 12, 1997 | Dec 19, 1997 | Jan 2, 1998 |
| № 8116 | N25 | E15 | 08 | 0080 | BETA | Dec 10, 1997 | Dec 17, 1997 | Dec 31, 1997 |
| № 8115 | N33 | W44 | 03 | 0010 | BETA | Dec 5, 1997 | Dec 13, 1997 | Dec 27, 1997 |
| № 8114 | S28 | W49 | 01 | 0000 | ALPHA | Dec 5, 1997 | Dec 12, 1997 | Dec 26, 1997 |
| № 8113 | N20 | W68 | 05 | 0190 | BETA | Dec 4, 1997 | Dec 11, 1997 | Dec 24, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to December 1997. The gray background is the average SSN index.
