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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 26, 1999. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8744 | N08 | E44 | 04 | 0010 | BETA | Oct 30, 1999 | Nov 6, 1999 | Nov 20, 1999 |
| № 8743 | S15 | E21 | 04 | 0010 | BETA | Oct 29, 1999 | Nov 4, 1999 | Nov 18, 1999 |
| № 8742 | N08 | E55 | 19 | 0450 | BETA | Oct 31, 1999 | Nov 7, 1999 | Nov 20, 1999 |
| № 8741 | S25 | E23 | 18 | 0280 | BETA | Oct 29, 1999 | Nov 5, 1999 | Nov 19, 1999 |
| № 8739 | S12 | E04 | 55 | 0570 | BETA-GAMMA-DELTA | Oct 27, 1999 | Nov 3, 1999 | Nov 17, 1999 |
| № 8738 | N18 | W39 | 04 | 0020 | BETA | Oct 24, 1999 | Oct 31, 1999 | Nov 14, 1999 |
| № 8737 | S13 | W66 | 05 | 0370 | BETA | Oct 22, 1999 | Oct 29, 1999 | Nov 11, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to October 1999. The gray background is the average SSN index.
