Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 16, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3434 | N08 | W03 | 03 | 0020 | Alpha | Sep 17, 2023 | Sep 24, 2023 | Oct 7, 2023 |
| № 3433 | N28 | E26 | 01 | 0090 | Alpha | Sep 19, 2023 | Sep 26, 2023 | Oct 10, 2023 |
| № 3430 | S18 | W62 | 05 | 0030 | Beta | Sep 12, 2023 | Sep 19, 2023 | Oct 3, 2023 |
| № 3429 | N11 | W11 | 13 | 0090 | Beta-Gamma-Delta | Sep 16, 2023 | Sep 23, 2023 | Oct 7, 2023 |
| № 3425 | N23 | W55 | 08 | 0040 | Beta | Sep 13, 2023 | Sep 20, 2023 | Oct 4, 2023 |
| № 3423 | N16 | W86 | 06 | 0220 | Beta | Sep 11, 2023 | Sep 17, 2023 | Oct 1, 2023 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1994 to September 2023. The gray background is the average SSN index.
