Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 23, 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 | N20 | W12 | 03 | 0010 | BETA | Apr 23, 2000 | Apr 30, 2000 | May 14, 2000 |
| № 8972 | N33 | W10 | 13 | 0110 | BETA | Apr 23, 2000 | Apr 30, 2000 | May 15, 2000 |
| № 8971 | N17 | E54 | 12 | 0600 | BETA-GAMMA | Apr 28, 2000 | May 5, 2000 | May 19, 2000 |
| № 8970 | S15 | E56 | 15 | 1010 | BETA | Apr 28, 2000 | May 5, 2000 | May 19, 2000 |
| № 8969 | N11 | E34 | 03 | 0040 | BETA | Apr 27, 2000 | May 3, 2000 | May 17, 2000 |
| № 8968 | S13 | W12 | 09 | 0190 | BETA | Apr 23, 2000 | Apr 30, 2000 | May 14, 2000 |
| № 8967 | N22 | E23 | 13 | 0220 | BETA | Apr 26, 2000 | May 3, 2000 | May 17, 2000 |
| № 8966 | S14 | E10 | 04 | 0010 | BETA | Apr 25, 2000 | May 2, 2000 | May 15, 2000 |
| № 8965 | S16 | W00 | 04 | 0010 | BETA | Apr 24, 2000 | May 1, 2000 | May 15, 2000 |
| № 8963 | N17 | W44 | 07 | 0030 | BETA | Apr 21, 2000 | Apr 28, 2000 | May 11, 2000 |
| № 8962 | N24 | W40 | 01 | 0020 | ALPHA | Apr 21, 2000 | Apr 28, 2000 | May 12, 2000 |
| № 8958 | N18 | W81 | 05 | 0050 | BETA | Apr 18, 2000 | Apr 25, 2000 | May 8, 2000 |
| № 8955 | S21 | W71 | 07 | 0060 | BETA | Apr 19, 2000 | Apr 25, 2000 | May 9, 2000 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1971 to April 2000. The gray background is the average SSN index.
