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Table 1
Parameters γ for the eclipses of cycles 12–24.
| Cycle N | Date | W | Φ | γ | |
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|
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| 12 | 1878 Jun. 29 | 75 | − 0.06 | 72 | |
| 13 | 1889 Dec. 21 | 88 | 0.03 | 65 | |
| 14 | 1901 May 17 | 63 | − 0.07 | 67 | |
| 15 | 1911 Apr. 28 | 103 | − 0.18 | 77 | |
| 16 | 1923 Sep. 10 | 77 | 0.04 | 85 | |
| 17 | 1934 Feb. 14 | 114 | 0.14 | 97 | |
| 18 | 1945 Jun. 09 | 151 | 0.28 | 90* | |
| 19 | 1954 Jun. 30 | 190 | 0 | 98 | |
| 20 | 1965 May 30 | 106 | 0.14 | 70 | |
| 21 | 1976 Oct. 23 | 155 | 0.08 | 69 | |
| 22 | 1984 Nov. 22 | 158 | − 0.35 | 74* | |
| 23 | 1997 Mar. 09 | 125 | 0.1 | 60 | |
| 24 | 2008 Aug. 01 | – | 0.1 | 54 | |
Notes. W – the amplitude of the Wolf number at the sunspot maximum, Φ – the phase of solar activity for eclipse date. For cycle 18 and 22 γ was modified taking the phase of the cycle into account.
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