Supporting amateur astronomers since 1890
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British Astronomical Association Supporting amateur astronomers since 1890 |
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| alf CrB: Eclipsing Binary Star | |||
| Total Number of Spectra: | 90 | ||
| First Spectrum: | JD 2457988.710300 | \ | 23 Aug 2017 05:02:49.920000 UT |
| Latest Spectrum: | JD 2460984.588140 | \ | 5 Nov 2025 02:06:55.296000 UT |
| Year | Total | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025 | 67 | 6 | 5 | 10 | 0 | 8 | 6 | 14 | 2 | 0 | 13 | 3 | 0 |
| 2024 | 16 | 0 | 0 | 3 | 3 | 0 | 0 | 1 | 6 | 2 | 1 | 0 | 0 |
| 2021 | 3 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 |
| 2020 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| 2019 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
| 2017 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |