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Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on November 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8778 | S12 | E45 | 02 | 0010 | ALPHA | Nov 28, 1999 | Dec 4, 1999 | Dec 18, 1999 |
| № 8777 | S26 | E24 | 01 | 0000 | ALPHA | Nov 26, 1999 | Dec 3, 1999 | Dec 17, 1999 |
| № 8776 | S29 | W04 | 12 | 0080 | BETA | Nov 24, 1999 | Dec 1, 1999 | Dec 15, 1999 |
| № 8773 | S15 | W05 | 07 | 0020 | BETA | Nov 24, 1999 | Dec 1, 1999 | Dec 14, 1999 |
| № 8772 | N05 | E13 | 10 | 0040 | BETA | Nov 25, 1999 | Dec 2, 1999 | Dec 16, 1999 |
| № 8771 | S16 | W14 | 24 | 0280 | BETA-GAMMA | Nov 23, 1999 | Nov 30, 1999 | Dec 14, 1999 |
| № 8768 | N16 | W81 | 07 | 0100 | BETA | Nov 18, 1999 | Nov 25, 1999 | Dec 9, 1999 |
| № 8766 | N17 | W52 | 12 | 0090 | BETA | Nov 20, 1999 | Nov 27, 1999 | Dec 11, 1999 |
| № 8765 | S13 | W75 | 14 | 0720 | BETA-GAMMA-DELTA | Nov 19, 1999 | Nov 25, 1999 | Dec 9, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to November 1999. The gray background is the average SSN index.
