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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8097 | N18 | E73 | 02 | 0060 | ALPHA | Oct 23, 1997 | Oct 30, 1997 | Nov 12, 1997 |
| № 8096 | N15 | E43 | 06 | 0050 | BETA | Oct 21, 1997 | Oct 27, 1997 | Nov 10, 1997 |
| № 8093 | N30 | W41 | 09 | 0070 | BETA | Oct 14, 1997 | Oct 21, 1997 | Nov 4, 1997 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1968 to October 1997. The gray background is the average SSN index.
