Relevé H-Alpha du 2025-05-17 08:45 UTC
H-Alpha solar observation made on May 17, 2025 by astrololo31 and published on Wolf.Solar. Wolf number 37 (3 groups, 7 spots). Carrington rotation 2297.
Counts
| Groups | 3 |
|---|---|
| Spots | 7 |
| Hα active | 4 |
| Hα quiescent | 9 |
| Filaments | 10 |
| Flares | 0 |
| Plages | 4 |
Conditions
| Seeing | 2 / 5 |
|---|---|
| Transparency | 2 / 4 |
| Cloud cover (octas) | 1 |
Ephemerides
| Carrington rotation | 2297 |
|---|---|
| L₀ | 78.69° |
| B₀ | -2.40° |
| P | -20.23° |
| Declination | 19.42° |
| Julian day | 2460812.86458 |
That day in the community
| Daily mean Wolf number | 41 |
|---|---|
| Observations | 8 |
| CR | 2297 |