Search
Relevé H-Alpha du 2025-04-21 09:15 UTC
H-Alpha — April 21, 2025 at 09:15 AM · by astrololo31 · Wolf 87
H-Alpha solar observation made on April 21, 2025 by astrololo31 and published on Wolf.Solar. Wolf number 87 (7 groups, 17 spots). Carrington rotation 2296.
Counts
| Groups | 7 |
|---|
| Spots | 17 |
|---|
| Hα active | 3 |
|---|
| Hα quiescent | 7 |
|---|
| Filaments | 12 |
|---|
| Flares | 0 |
|---|
| Plages | 8 |
|---|
Conditions
| Seeing | 2 / 5 |
|---|
| Transparency | 2 / 4 |
|---|
| Cloud cover (octas) | 2 |
|---|
Ephemerides
| Carrington rotation | 2296 |
|---|
| L₀ | 62.09° |
|---|
| B₀ | -5.08° |
|---|
| P | -25.46° |
|---|
| Declination | 12.00° |
|---|
| Julian day | 2460786.88542 |
|---|
View on Wolf.Solar ↗
Grande protubérance en barre au limbe nord-est