Relevé H-Alpha du 2025-07-31 08:47 UTC
H-Alpha solar observation made on July 31, 2025 by solarium and published on Wolf.Solar. Wolf number 107 (9 groups, 17 spots). Carrington rotation 2300.
Counts
| Groups | 9 |
|---|---|
| Spots | 17 |
| Hα active | 3 |
| Hα quiescent | 3 |
| Filaments | 8 |
| Flares | 0 |
| Plages | 3 |
Conditions
| Seeing | 2 / 5 |
|---|---|
| Transparency | 1 / 4 |
| Cloud cover (octas) | -1 |
Ephemerides
| Carrington rotation | 2300 |
|---|---|
| L₀ | 166.17° |
| B₀ | 5.73° |
| P | 10.63° |
| Declination | 18.16° |
| Julian day | 2460887.86597 |
That day in the community
| Daily mean Wolf number | 137 |
|---|---|
| Observations | 4 |
| CR | 2300 |