Solar eclipse of April 30, 1957 | |
---|---|
Type of eclipse | |
Nature | Annular |
Gamma | 0.9992 |
Magnitude | 0.9799 |
Maximum eclipse | |
Duration | - |
Coordinates | 70°36′N40°18′E / 70.6°N 40.3°E |
Max. width of band | - km |
Times (UTC) | |
Greatest eclipse | 0:05:28 |
References | |
Saros | 118 (65 of 72) |
Catalog # (SE5000) | 9414 |
An annular solar eclipse occurred at the Moon's descending node of orbit on Tuesday, April 30, 1957, with a magnitude of 0.9799. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. This annular solar eclipse was non-central. Instead, over half of the antumbral shadow fell off into space throughout the eclipse. Gamma had a value of 0.9992. Annularity was visible from northern Soviet Union (today's Russia) and Bear Island, the southernmost island of Svalbard, Norway.
This was the last of 57 umbral eclipses of Solar Saros 118. The 1st was in 947 AD and the 57th was in 1957. The total duration is 1010 years.
While it was an annular solar eclipse, it was a non-central solar eclipse.
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]
Solar eclipse series sets from 1957 to 1960 | ||||||
---|---|---|---|---|---|---|
Descending node | Ascending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
118 | April 30, 1957 Annular (non-central) | 0.9992 | 123 | October 23, 1957 Total (non-central) | 1.0022 | |
128 | April 19, 1958 Annular | 0.275 | 133 | October 12, 1958 Total | −0.2951 | |
138 | April 8, 1959 Annular | −0.4546 | 143 | October 2, 1959 Total | 0.4207 | |
148 | March 27, 1960 Partial | −1.1537 | 153 | September 20, 1960 Partial | 1.2057 |
This eclipse is a part of Saros series 118, repeating every 18 years, 11 days, and containing 72 events. The series started with a partial solar eclipse on May 24, 803 AD. It contains total eclipses from August 19, 947 AD through October 25, 1650; hybrid eclipses on November 4, 1668 and November 15, 1686; and annular eclipses from November 27, 1704 through April 30, 1957. The series ends at member 72 as a partial eclipse on July 15, 2083. 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 totality was produced by member 34 at 6 minutes, 59 seconds on May 16, 1398, and the longest duration of annularity was produced by member 59 at 1 minutes, 58 seconds on February 23, 1849. All eclipses in this series occur at the Moon’s descending node of orbit. [2]
Series members 57–72 occur between 1801 and 2083: | ||
---|---|---|
57 | 58 | 59 |
February 1, 1813 | February 12, 1831 | February 23, 1849 |
60 | 61 | 62 |
March 6, 1867 | March 16, 1885 | March 29, 1903 |
63 | 64 | 65 |
April 8, 1921 | April 19, 1939 | April 30, 1957 |
66 | 67 | 68 |
May 11, 1975 | May 21, 1993 | June 1, 2011 |
69 | 70 | 71 |
June 12, 2029 | June 23, 2047 | July 3, 2065 |
72 | ||
July 15, 2083 |
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 11, 1953 and July 11, 2029 | ||||
---|---|---|---|---|
July 10–11 | April 29–30 | February 15–16 | December 4 | September 21–23 |
116 | 118 | 120 | 122 | 124 |
July 11, 1953 | April 30, 1957 | February 15, 1961 | December 4, 1964 | September 22, 1968 |
126 | 128 | 130 | 132 | 134 |
July 10, 1972 | April 29, 1976 | February 16, 1980 | December 4, 1983 | September 23, 1987 |
136 | 138 | 140 | 142 | 144 |
July 11, 1991 | April 29, 1995 | February 16, 1999 | December 4, 2002 | September 22, 2006 |
146 | 148 | 150 | 152 | 154 |
July 11, 2010 | April 29, 2014 | February 15, 2018 | December 4, 2021 | September 21, 2025 |
156 | ||||
July 11, 2029 |
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.
Series members between 1837 and 2200 | ||||
---|---|---|---|---|
April 5, 1837 (Saros 107) | March 5, 1848 (Saros 108) | February 3, 1859 (Saros 109) | December 2, 1880 (Saros 111) | |
August 31, 1913 (Saros 114) | July 31, 1924 (Saros 115) | June 30, 1935 (Saros 116) | ||
May 30, 1946 (Saros 117) | April 30, 1957 (Saros 118) | March 28, 1968 (Saros 119) | February 26, 1979 (Saros 120) | January 26, 1990 (Saros 121) |
December 25, 2000 (Saros 122) | November 25, 2011 (Saros 123) | October 25, 2022 (Saros 124) | September 23, 2033 (Saros 125) | August 23, 2044 (Saros 126) |
July 24, 2055 (Saros 127) | June 22, 2066 (Saros 128) | May 22, 2077 (Saros 129) | April 21, 2088 (Saros 130) | March 21, 2099 (Saros 131) |
February 18, 2110 (Saros 132) | January 19, 2121 (Saros 133) | December 19, 2131 (Saros 134) | November 17, 2142 (Saros 135) | October 17, 2153 (Saros 136) |
September 16, 2164 (Saros 137) | August 16, 2175 (Saros 138) | July 16, 2186 (Saros 139) | June 15, 2197 (Saros 140) |
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 | ||
---|---|---|
August 7, 1812 (Saros 113) | July 18, 1841 (Saros 114) | June 28, 1870 (Saros 115) |
June 8, 1899 (Saros 116) | May 19, 1928 (Saros 117) | April 30, 1957 (Saros 118) |
April 9, 1986 (Saros 119) | March 20, 2015 (Saros 120) | February 28, 2044 (Saros 121) |
February 7, 2073 (Saros 122) | January 19, 2102 (Saros 123) | December 30, 2130 (Saros 124) |
December 9, 2159 (Saros 125) | November 18, 2188 (Saros 126) |
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