Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on September 15, 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 | E42 | 01 | 0090 | Alpha | Sep 19, 2023 | Sep 26, 2023 | Oct 10, 2023 |
| № 3431 | S08 | E07 | 02 | 0020 | Alpha | Sep 16, 2023 | Sep 23, 2023 | Oct 7, 2023 |
| № 3430 | S17 | W45 | 10 | 0050 | Beta | Sep 12, 2023 | Sep 19, 2023 | Oct 3, 2023 |
| № 3429 | N10 | E07 | 15 | 0080 | Beta | Sep 16, 2023 | Sep 23, 2023 | Oct 7, 2023 |
| № 3425 | N23 | W39 | 16 | 0070 | Beta | Sep 13, 2023 | Sep 20, 2023 | Oct 4, 2023 |
| № 3423 | N15 | W70 | 06 | 0260 | Beta | 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.
