Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 13, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3433 | N28 | E67 | 01 | 0070 | Alpha | Sep 19, 2023 | Sep 26, 2023 | Oct 10, 2023 |
| № 3432 | S22 | W88 | 02 | 0010 | Beta | Sep 7, 2023 | Sep 14, 2023 | Sep 28, 2023 |
| № 3431 | S07 | E33 | 05 | 0030 | Beta | Sep 16, 2023 | Sep 23, 2023 | Oct 7, 2023 |
| № 3430 | S17 | W19 | 07 | 0030 | Beta | Sep 13, 2023 | Sep 19, 2023 | Oct 3, 2023 |
| № 3429 | N10 | E31 | 06 | 0030 | Beta | Sep 16, 2023 | Sep 23, 2023 | Oct 7, 2023 |
| № 3427 | S27 | W12 | 01 | 0005 | Alpha | Sep 13, 2023 | Sep 20, 2023 | Oct 4, 2023 |
| № 3425 | N24 | W13 | 24 | 0090 | Beta-Gamma | Sep 13, 2023 | Sep 20, 2023 | Oct 4, 2023 |
| № 3423 | N16 | W44 | 15 | 0340 | Beta-Gamma | 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.
