Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 17, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3283 | S22 | E46 | 05 | 0050 | Beta | Apr 22, 2023 | Apr 29, 2023 | May 12, 2023 |
| № 3282 | N11 | E22 | 17 | 0530 | Beta | Apr 20, 2023 | Apr 27, 2023 | May 10, 2023 |
| № 3281 | S24 | E30 | 12 | 0300 | Beta-Gamma | Apr 20, 2023 | Apr 27, 2023 | May 11, 2023 |
| № 3280 | S07 | W73 | 08 | 0200 | Beta-Gamma | Apr 13, 2023 | Apr 19, 2023 | May 3, 2023 |
| № 3279 | S20 | E09 | 10 | 0180 | Beta | Apr 19, 2023 | Apr 26, 2023 | May 10, 2023 |
| № 3276 | S23 | W08 | 05 | 0020 | Beta | Apr 18, 2023 | Apr 24, 2023 | May 8, 2023 |
| № 3275 | N19 | W19 | 01 | 0020 | Alpha | Apr 17, 2023 | Apr 24, 2023 | May 7, 2023 |
| № 3273 | N08 | W71 | 01 | 0010 | Alpha | Apr 13, 2023 | Apr 20, 2023 | May 3, 2023 |
| № 3272 | S22 | W57 | 06 | 0030 | Beta | Apr 14, 2023 | Apr 21, 2023 | May 5, 2023 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1994 to April 2023. The gray background is the average SSN index.
