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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on December 10, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8120 | S22 | E24 | 09 | 0050 | BETA | Dec 13, 1997 | Dec 20, 1997 | Jan 2, 1998 |
| № 8119 | N32 | W11 | 08 | 0050 | BETA | Dec 10, 1997 | Dec 17, 1997 | Dec 31, 1997 |
| № 8118 | S39 | E27 | 07 | 0070 | BETA | Dec 13, 1997 | Dec 20, 1997 | Jan 4, 1998 |
| № 8117 | N22 | E12 | 03 | 0010 | BETA | Dec 12, 1997 | Dec 19, 1997 | Jan 2, 1998 |
| № 8116 | N25 | W13 | 05 | 0070 | BETA | Dec 10, 1997 | Dec 17, 1997 | Dec 31, 1997 |
| № 8115 | N33 | W70 | 02 | 0020 | BETA | Dec 5, 1997 | Dec 12, 1997 | Dec 27, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to December 1997. The gray background is the average SSN index.
