No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 3, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8716 | N21 | E70 | 04 | 0160 | BETA | Oct 9, 1999 | Oct 16, 1999 | Oct 30, 1999 |
| № 8714 | N14 | E30 | 01 | 0020 | ALPHA | Oct 6, 1999 | Oct 13, 1999 | Oct 27, 1999 |
| № 8713 | S12 | E19 | 01 | 0020 | ALPHA | Oct 5, 1999 | Oct 12, 1999 | Oct 26, 1999 |
| № 8710 | N21 | W00 | 01 | 0010 | ALPHA | Oct 4, 1999 | Oct 11, 1999 | Oct 25, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to October 1999. The gray background is the average SSN index.
