Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 21, 2023. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3284 | S08 | E30 | 02 | 0010 | Alpha | Apr 24, 2023 | May 1, 2023 | May 15, 2023 |
| № 3283 | S20 | W01 | 04 | 0050 | Beta | Apr 22, 2023 | Apr 29, 2023 | May 13, 2023 |
| № 3282 | N12 | W28 | 23 | 0380 | Beta | Apr 20, 2023 | Apr 27, 2023 | May 10, 2023 |
| № 3281 | S22 | W22 | 06 | 0060 | Beta | Apr 20, 2023 | Apr 27, 2023 | May 11, 2023 |
| № 3279 | S19 | W39 | 01 | 0010 | Alpha | Apr 19, 2023 | Apr 26, 2023 | May 10, 2023 |
| № 3276 | S21 | W33 | 01 | 0010 | Alpha | Apr 19, 2023 | Apr 26, 2023 | May 10, 2023 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1994 to April 2023. The gray background is the average SSN index.
