Solar_eclipse_of_July_22,_1971
Solar eclipse of July 22, 1971
20th-century partial solar eclipse
A partial solar eclipse occurred on July 22, 1971. This was the 70th and final solar eclipse from Solar Saros 116.
Solar Saros 116 and Lunar Saros 109
Solar eclipse of June 19, 1917
Solar eclipse of June 30, 1935
Solar eclipse of July 11, 1953
Solar eclipse of July 22, 1971
Solar eclipses of 1971–1974
This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[1]
Note: Partial solar eclipses on February 25, 1971 and August 20, 1971 occur in the next lunar year set.
| Solar eclipse series sets from 1971 to 1974 | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 116 | 1971 July 22 Partial | 1.51298 | 121 | 1972 January 16 Annular | −0.93651 | |
| 126 | 1972 July 10 Total | 0.68719 | 131 | 1973 January 4 Annular | −0.26441 | |
| 136 | 1973 June 30 Total | −0.07853 | 141 | 1973 December 24 Annular | 0.41710 | |
| 146 | 1974 June 20 Total | −0.82388 | 151 | 1974 December 13 Partial | 1.07974 | |
Metonic cycle
The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days). All eclipses in this table occur at the Moon's descending node.
| 21 events between July 22, 1971 and July 22, 2047 | ||||
|---|---|---|---|---|
| July 21–22 | May 9–11 | February 26–27 | December 14–15 | October 2–3 |
| 116 | 118 | 120 | 122 | 124 |
July 22, 1971 |
May 11, 1975 |
February 26, 1979 |
December 15, 1982 |
October 3, 1986 |
| 126 | 128 | 130 | 132 | 134 |
July 22, 1990 |
May 10, 1994 |
February 26, 1998 |
December 14, 2001 |
October 3, 2005 |
| 136 | 138 | 140 | 142 | 144 |
July 22, 2009 |
May 10, 2013 |
February 26, 2017 |
December 14, 2020 |
October 2, 2024 |
| 146 | 148 | 150 | 152 | 154 |
July 22, 2028 |
May 9, 2032 |
February 27, 2036 |
December 15, 2039 |
October 3, 2043 |
| 156 | ||||
July 22, 2047 | ||||
Half-Saros cycle
A solar eclipse will be preceded and followed by lunar eclipses by 9 years and 5.5 days (a half saros).[2] This solar eclipse is related to two penumbral lunar eclipses of Lunar Saros 109 on the first and second columns.
From the Earth
From the Moon
- van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
- Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
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