No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 22, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8674 | S25 | E62 | 10 | 0400 | BETA | Aug 28, 1999 | Sep 4, 1999 | Sep 18, 1999 |
| № 8673 | S19 | E57 | 16 | 0400 | BETA | Aug 27, 1999 | Sep 3, 1999 | Sep 17, 1999 |
| № 8672 | N16 | W47 | 02 | 0010 | ALPHA | Aug 19, 1999 | Aug 26, 1999 | Sep 9, 1999 |
| № 8668 | N22 | W23 | 11 | 0230 | BETA | Aug 21, 1999 | Aug 28, 1999 | Sep 11, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to August 1999. The gray background is the average SSN index.
