Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 23, 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) | |
|---|---|---|---|---|---|---|---|---|
| № 3446 | N23 | E65 | 03 | 0010 | Beta | Sep 29, 2023 | Oct 6, 2023 | Oct 20, 2023 |
| № 3445 | S15 | E35 | 09 | 0100 | Beta | Sep 27, 2023 | Oct 3, 2023 | Oct 17, 2023 |
| № 3444 | N24 | E30 | 01 | 0010 | Alpha | Sep 26, 2023 | Oct 3, 2023 | Oct 17, 2023 |
| № 3443 | N28 | W38 | 15 | 0150 | Beta-Gamma | Sep 21, 2023 | Sep 28, 2023 | Oct 12, 2023 |
| № 3442 | S09 | E27 | 01 | 0030 | Alpha | Sep 26, 2023 | Oct 3, 2023 | Oct 16, 2023 |
| № 3441 | N08 | W28 | 08 | 0030 | Beta | Sep 22, 2023 | Sep 29, 2023 | Oct 12, 2023 |
| № 3440 | N18 | E23 | 01 | 0060 | Alpha | Sep 26, 2023 | Oct 2, 2023 | Oct 16, 2023 |
| № 3439 | S24 | E07 | 02 | 0030 | Beta | Sep 24, 2023 | Oct 1, 2023 | Oct 15, 2023 |
| № 3438 | N11 | W03 | 12 | 0050 | Beta | Sep 24, 2023 | Sep 30, 2023 | Oct 14, 2023 |
| № 3437 | S18 | W67 | 05 | 0120 | Beta | Sep 19, 2023 | Sep 26, 2023 | Oct 9, 2023 |
| № 3435 | N09 | E05 | 06 | 0280 | Beta | Sep 24, 2023 | Oct 1, 2023 | Oct 15, 2023 |
| № 3433 | N28 | W64 | 01 | 0060 | Alpha | Sep 19, 2023 | Sep 26, 2023 | Oct 10, 2023 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1994 to September 2023. The gray background is the average SSN index.
