Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 28, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 8973 | N22 | W80 | 02 | 0040 | BETA | Apr 23, 2000 | Apr 30, 2000 | May 14, 2000 |
| № 8972 | N35 | W71 | 04 | 0150 | BETA | Apr 23, 2000 | Apr 30, 2000 | May 15, 2000 |
| № 8971 | N18 | W10 | 17 | 0710 | BETA | Apr 28, 2000 | May 5, 2000 | May 19, 2000 |
| № 8970 | S14 | W09 | 44 | 0990 | BETA-GAMMA | Apr 28, 2000 | May 5, 2000 | May 19, 2000 |
| № 8969 | N12 | W39 | 01 | 0000 | ALPHA | Apr 26, 2000 | May 3, 2000 | May 16, 2000 |
| № 8968 | S11 | W78 | 04 | 0020 | BETA | Apr 23, 2000 | Apr 30, 2000 | May 13, 2000 |
| № 8967 | N23 | W41 | 07 | 0100 | BETA | Apr 26, 2000 | May 3, 2000 | May 17, 2000 |
| № 8965 | S15 | W62 | 04 | 0010 | BETA | Apr 24, 2000 | May 1, 2000 | May 15, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to April 2000. The gray background is the average SSN index.
