Solar eclipse of July 22, 1971 | |
---|---|
Type of eclipse | |
Nature | Partial |
Gamma | 1.513 |
Magnitude | 0.0689 |
Maximum eclipse | |
Coordinates | 63°30′N177°00′E / 63.5°N 177°E |
Times (UTC) | |
Greatest eclipse | 9:31:55 |
References | |
Saros | 116 (70 of 70) |
Catalog # (SE5000) | 9446 |
A partial solar eclipse occurred at the Moon's descending node of orbit on Thursday, July 22, 1971, with a magnitude of 0.0689. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth. This was the 70th and final solar eclipse from Solar Saros 116.
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]
The partial solar eclipses on February 25, 1971 and August 20, 1971 occur in the previous lunar year eclipse set.
Solar eclipse series sets from 1971 to 1974 | ||||||
---|---|---|---|---|---|---|
Descending node | Ascending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
116 | July 22, 1971 Partial | 1.513 | 121 | January 16, 1972 Annular | −0.9365 | |
126 | July 10, 1972 Total | 0.6872 | 131 | January 4, 1973 Annular | −0.2644 | |
136 | June 30, 1973 Total | −0.0785 | 141 | December 24, 1973 Annular | 0.4171 | |
146 | June 20, 1974 Total | −0.8239 | 151 | December 13, 1974 Partial | 1.0797 |
This eclipse is a part of Saros series 116, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on June 23, 727 AD. It contains annular eclipses from October 10, 907 AD through May 6, 1845. There are no hybrid or total eclipses in this set. The series ends at member 70 as a partial eclipse on July 22, 1971. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
The longest duration of annularity was produced by member 51 at 12 minutes, 2 seconds on December 25, 1628. All eclipses in this series occur at the Moon’s descending node of orbit. [2]
Series members 61–70 occur between 1801 and 1971: | ||
---|---|---|
61 | 62 | 63 |
April 14, 1809 | April 26, 1827 | May 6, 1845 |
64 | 65 | 66 |
May 17, 1863 | May 27, 1881 | June 8, 1899 |
67 | 68 | 69 |
June 19, 1917 | June 30, 1935 | July 11, 1953 |
70 | ||
July 22, 1971 |
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 eclipse events between July 22, 1971 and July 22, 2047 | ||||
---|---|---|---|---|
July 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 |
This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.
The partial solar eclipses on March 27, 1884 (part of Saros 108) and December 24, 1916 (part of Saros 111) are also a part of this series but are not included in the table below.
Series members between 1971 and 2200 | ||||
---|---|---|---|---|
July 22, 1971 (Saros 116) | June 21, 1982 (Saros 117) | May 21, 1993 (Saros 118) | April 19, 2004 (Saros 119) | March 20, 2015 (Saros 120) |
February 17, 2026 (Saros 121) | January 16, 2037 (Saros 122) | December 16, 2047 (Saros 123) | November 16, 2058 (Saros 124) | October 15, 2069 (Saros 125) |
September 13, 2080 (Saros 126) | August 15, 2091 (Saros 127) | July 15, 2102 (Saros 128) | June 13, 2113 (Saros 129) | May 14, 2124 (Saros 130) |
April 13, 2135 (Saros 131) | March 12, 2146 (Saros 132) | February 9, 2157 (Saros 133) | January 10, 2168 (Saros 134) | December 9, 2178 (Saros 135) |
November 8, 2189 (Saros 136) | October 9, 2200 (Saros 137) |
This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
Series members between 1801 and 2200 | ||
---|---|---|
October 31, 1826 (Saros 111) | ||
August 31, 1913 (Saros 114) | August 12, 1942 (Saros 115) | July 22, 1971 (Saros 116) |
July 1, 2000 (Saros 117) | June 12, 2029 (Saros 118) | May 22, 2058 (Saros 119) |
May 2, 2087 (Saros 120) | April 13, 2116 (Saros 121) | March 23, 2145 (Saros 122) |
March 3, 2174 (Saros 123) |
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