Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 20, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3441 | N09 | E13 | 03 | 0020 | Beta | Sep 22, 2023 | Sep 29, 2023 | Oct 12, 2023 |
| № 3440 | N17 | E62 | 02 | 0070 | Beta | Sep 26, 2023 | Oct 2, 2023 | Oct 16, 2023 |
| № 3439 | S24 | E45 | 03 | 0050 | Beta | Sep 24, 2023 | Oct 1, 2023 | Oct 15, 2023 |
| № 3438 | N10 | E36 | 08 | 0060 | Beta-Gamma | Sep 24, 2023 | Sep 30, 2023 | Oct 14, 2023 |
| № 3437 | S17 | W27 | 06 | 0100 | Beta | Sep 19, 2023 | Sep 26, 2023 | Oct 9, 2023 |
| № 3436 | N20 | W47 | 12 | 0160 | Beta-Gamma | Sep 17, 2023 | Sep 24, 2023 | Oct 8, 2023 |
| № 3435 | N09 | E44 | 04 | 0280 | Beta-Delta | Sep 24, 2023 | Oct 1, 2023 | Oct 15, 2023 |
| № 3433 | N28 | W23 | 01 | 0090 | Alpha | Sep 19, 2023 | Sep 26, 2023 | Oct 10, 2023 |
| № 3429 | N12 | W65 | 03 | 0080 | Beta | Sep 16, 2023 | Sep 23, 2023 | Oct 6, 2023 |
| № 3425 | N24 | W86 | 01 | 0060 | Alpha | Sep 14, 2023 | Sep 21, 2023 | Oct 5, 2023 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1994 to September 2023. The gray background is the average SSN index.
