Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 28, 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 | S18 | E67 | 02 | 0030 | Beta | Oct 4, 2023 | Oct 11, 2023 | Oct 25, 2023 |
| № 3449 | N15 | E34 | 10 | 0070 | Beta-Gamma | Oct 2, 2023 | Oct 8, 2023 | Oct 22, 2023 |
| № 3448 | N13 | E46 | 01 | 0130 | Alpha | Oct 2, 2023 | Oct 9, 2023 | Oct 23, 2023 |
| № 3447 | S22 | W18 | 14 | 0180 | Beta | Sep 28, 2023 | Oct 4, 2023 | Oct 18, 2023 |
| № 3445 | S13 | W36 | 22 | 0200 | Beta | Sep 26, 2023 | Oct 3, 2023 | Oct 17, 2023 |
| № 3442 | S09 | W40 | 01 | 0005 | Alpha | Sep 26, 2023 | Oct 3, 2023 | Oct 16, 2023 |
| № 3440 | N18 | W46 | 01 | 0030 | Alpha | Sep 25, 2023 | Oct 2, 2023 | Oct 16, 2023 |
| № 3435 | N10 | W64 | 07 | 0190 | Beta | 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.
