Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on October 21, 2000. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 9204 | N09 | E17 | 04 | 0020 | Alpha | Oct 23, 2000 | Oct 30, 2000 | Nov 12, 2000 |
| № 9203 | N15 | W13 | 04 | 0030 | Beta | Oct 21, 2000 | Oct 28, 2000 | Nov 10, 2000 |
| № 9202 | N11 | E07 | 05 | 0030 | Alpha | Oct 22, 2000 | Oct 29, 2000 | Nov 12, 2000 |
| № 9201 | N17 | E34 | 22 | 0220 | Beta | Oct 24, 2000 | Oct 31, 2000 | Nov 14, 2000 |
| № 9200 | S16 | E10 | 07 | 0040 | Beta | Oct 23, 2000 | Oct 29, 2000 | Nov 12, 2000 |
| № 9199 | N08 | W02 | 21 | 0140 | Beta-Gamma | Oct 22, 2000 | Oct 28, 2000 | Nov 11, 2000 |
| № 9198 | S30 | W09 | 11 | 0150 | Beta | Oct 21, 2000 | Oct 28, 2000 | Nov 11, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to October 2000. The gray background is the average SSN index.
