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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 30, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8750 | S18 | E12 | 02 | 0020 | ALPHA | Nov 1, 1999 | Nov 8, 1999 | Nov 21, 1999 |
| № 8749 | S21 | E51 | 01 | 0000 | ALPHA | Nov 4, 1999 | Nov 11, 1999 | Nov 24, 1999 |
| № 8748 | N19 | E06 | 05 | 0010 | BETA | Oct 31, 1999 | Nov 7, 1999 | Nov 21, 1999 |
| № 8747 | N11 | E46 | 08 | 0190 | BETA | Nov 3, 1999 | Nov 10, 1999 | Nov 24, 1999 |
| № 8746 | S16 | E09 | 03 | 0010 | BETA | Nov 1, 1999 | Nov 7, 1999 | Nov 21, 1999 |
| № 8745 | S14 | E30 | 06 | 0130 | BETA | Nov 2, 1999 | Nov 9, 1999 | Nov 23, 1999 |
| № 8743 | S14 | W31 | 08 | 0040 | BETA | Oct 29, 1999 | Nov 4, 1999 | Nov 18, 1999 |
| № 8742 | N10 | E05 | 33 | 0430 | BETA | Oct 31, 1999 | Nov 7, 1999 | Nov 21, 1999 |
| № 8741 | S24 | W27 | 22 | 0200 | BETA-GAMMA | Oct 29, 1999 | Nov 5, 1999 | Nov 19, 1999 |
| № 8739 | S12 | W47 | 26 | 0500 | BETA-GAMMA | Oct 27, 1999 | Nov 3, 1999 | Nov 17, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to October 1999. The gray background is the average SSN index.
