Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 30, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3450 | S19 | E44 | 13 | 0140 | Beta-Gamma | Oct 4, 2023 | Oct 11, 2023 | Oct 25, 2023 |
| № 3449 | N15 | E04 | 10 | 0120 | Beta | Oct 1, 2023 | Oct 8, 2023 | Oct 22, 2023 |
| № 3448 | N13 | E20 | 01 | 0100 | Alpha | Oct 2, 2023 | Oct 9, 2023 | Oct 23, 2023 |
| № 3447 | S22 | W44 | 03 | 0090 | Beta | Sep 28, 2023 | Oct 4, 2023 | Oct 18, 2023 |
| № 3445 | S14 | W64 | 03 | 0060 | Beta | Sep 26, 2023 | Oct 3, 2023 | Oct 17, 2023 |
| № 3440 | N18 | W71 | 01 | 0010 | Alpha | Sep 26, 2023 | Oct 2, 2023 | Oct 16, 2023 |
| № 3435 | N10 | W91 | 01 | 0050 | Alpha | Sep 24, 2023 | Oct 1, 2023 | Oct 14, 2023 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1994 to September 2023. The gray background is the average SSN index.
