Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 11, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8957 | S12 | W14 | 05 | 0020 | BETA | Apr 11, 2000 | Apr 18, 2000 | May 1, 2000 |
| № 8956 | N11 | E52 | 01 | 0000 | ALPHA | Apr 16, 2000 | Apr 23, 2000 | May 6, 2000 |
| № 8955 | S22 | E77 | 01 | 0040 | ALPHA | Apr 18, 2000 | Apr 25, 2000 | May 9, 2000 |
| № 8954 | N31 | E66 | 02 | 0000 | ALPHA | Apr 17, 2000 | Apr 24, 2000 | May 9, 2000 |
| № 8953 | S17 | E56 | 09 | 0060 | BETA | Apr 16, 2000 | Apr 23, 2000 | May 7, 2000 |
| № 8951 | N11 | E39 | 01 | 0100 | ALPHA | Apr 15, 2000 | Apr 22, 2000 | May 5, 2000 |
| № 8949 | S19 | E13 | 06 | 0130 | BETA | Apr 13, 2000 | Apr 20, 2000 | May 4, 2000 |
| № 8948 | S15 | W12 | 48 | 0170 | BETA-GAMMA-DELTA | Apr 11, 2000 | Apr 18, 2000 | May 2, 2000 |
| № 8939 | N23 | W82 | 01 | 0040 | ALPHA | Apr 6, 2000 | Apr 13, 2000 | Apr 26, 2000 |
| № 8936 | S16 | W88 | 01 | 0030 | ALPHA | Apr 5, 2000 | Apr 12, 2000 | Apr 26, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to April 2000. The gray background is the average SSN index.
