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Relevé H-Alpha du 2025-07-17 08:30 UTC
H-Alpha — July 17, 2025 at 08:30 AM · by astrololo31 · Wolf 131
H-Alpha solar observation made on July 17, 2025 by astrololo31 and published on Wolf.Solar. Wolf number 131 (10 groups, 31 spots). Carrington rotation 2300.
Counts
| Groups | 10 |
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| Spots | 31 |
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| Hα active | 0 |
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| Hα quiescent | 10 |
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| Filaments | 10 |
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| Flares | 0 |
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| Plages | 8 |
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Conditions
| Seeing | 2 / 5 |
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| Transparency | 2 / 4 |
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| Cloud cover (octas) | 0 |
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Ephemerides
| Carrington rotation | 2300 |
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| L₀ | 351.54° |
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| B₀ | 4.55° |
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| P | 4.74° |
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| Declination | 21.13° |
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| Julian day | 2460873.85417 |
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