Solar eclipse of May 20, 1947 | |
---|---|
Type of eclipse | |
Nature | Total |
Gamma | −0.3528 |
Magnitude | 1.0557 |
Maximum eclipse | |
Duration | 313 s (5 min 13 s) |
Coordinates | 0°12′N21°24′W / 0.2°N 21.4°W |
Max. width of band | 196 km (122 mi) |
Times (UTC) | |
Greatest eclipse | 13:47:47 |
References | |
Saros | 127 (54 of 82) |
Catalog # (SE5000) | 9392 |
A total solar eclipse occurred on May 20, 1947. 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 total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. Totality was visible from Chile including the capital city Santiago, Argentina, Paraguay, Brazil, Liberia, French West Africa (the parts now belonging to Ivory Coast and Benin), British Gold Coast (today's Ghana) including capital Accra, French Togoland (today's Togo) including capital Lomé, British Nigeria (today's Nigeria) including capital Lagos, French Cameroons (now belonging to Cameroon), French Equatorial Africa (the parts now belonging to Central African Republic and R. Congo), Belgian Congo (today's DR Congo), British Uganda (today's Uganda), British Tanganyika (now belonging to Tanzania), and British Kenya (today's Kenya). The southern part of Aconcagua, the highest mountain outside Asia, and Iguazu Falls, one of the largest waterfalls systems in the world, lie in the path of totality.
The Royal Astronomical Society of Canada sent a team to Araxa, Brazil. On the morning of the eclipse day, the sky was covered with clouds. Although a slight part of sunlight was seen through the gaps in the clouds around the first contact (the beginning of the partial phase), the weather did not improve after that. The eclipse ended at noon, and the sky began to clear up in the afternoon. The team documented changes in winds and luminance of the sky [1] . Australian radio astronomers originally planned to go to Brazil to make radio observations to promote the development of radio astronomy in Australia. However, the shipping of the equipments could only be made via London at that time, and it was not made before the eclipse in the end, so the plan was not successful. Another team from the Soviet Union successfully made radio observations in Brazil [2] .
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. [3]
Solar eclipse series sets from 1946 to 1949 | ||||||
---|---|---|---|---|---|---|
Ascending node | Descending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
117 | 1946 May 30 Partial | -1.07105 | 122 | 1946 November 23 Partial | 1.10500 | |
127 | 1947 May 20 Total | -0.35279 | 132 | 1947 November 12 Annular | 0.37431 | |
137 | 1948 May 9 Annular | 0.41332 | 142 | 1948 November 1 Total | -0.35172 | |
147 | 1949 April 28 Partial | 1.20682 | 152 | 1949 October 21 Partial | -1.02696 |
It is a part of Saros cycle 127, repeating every 18 years, 11 days, containing 82 events. The series started with partial solar eclipse on October 10, 991 AD. It contains total eclipses from May 14, 1352 through August 15, 2091. There are no annular eclipses in this series. The series ends at member 82 as a partial eclipse on March 21, 2452. The longest duration of totality was 5 minutes, 40 seconds on August 30, 1532. All eclipses in this series occurs at the Moon’s ascending node. [4]
Series members 52–68 occur between 1901 and 2200 | ||
---|---|---|
52 | 53 | 54 |
April 28, 1911 | May 9, 1929 | May 20, 1947 |
55 | 56 | 57 |
May 30, 1965 | June 11, 1983 | June 21, 2001 |
58 | 59 | 60 |
July 2, 2019 | July 13, 2037 | July 24, 2055 |
61 | 62 | 63 |
August 3, 2073 | August 15, 2091 | August 26, 2109 (Partial) |
64 | 65 | 66 |
September 6, 2127 (Partial | September 16, 2145 (Partial) | September 28, 2163 (Partial) |
67 | 68 | |
October 8, 2181 (Partial) | October 19, 2199 (Partial) |
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 1901 and 2100 | |||
---|---|---|---|
September 21, 1903 (Saros 123) | August 21, 1914 (Saros 124) | July 20, 1925 (Saros 125) | |
June 19, 1936 (Saros 126) | May 20, 1947 (Saros 127) | April 19, 1958 (Saros 128) | |
March 18, 1969 (Saros 129) | February 16, 1980 (Saros 130) | January 15, 1991 (Saros 131) | |
December 14, 2001 (Saros 132) | November 13, 2012 (Saros 133) | October 14, 2023 (Saros 134) | |
September 12, 2034 (Saros 135) | August 12, 2045 (Saros 136) | July 12, 2056 (Saros 137) | |
June 11, 2067 (Saros 138) | May 11, 2078 (Saros 139) | April 10, 2089 (Saros 140) | |
March 10, 2100 (Saros 141) |
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 ascending node.
22 eclipse events between December 24, 1916 and July 31, 2000 | ||||
---|---|---|---|---|
December 24–25 | October 12–13 | July 31-Aug 1 | May 18–20 | March 7–8 |
91 | 93 | 95 | 97 | 99 |
December 23, 1878 | October 12, 1882 | July 31, 1886 | May 18, 1890 | March 7, 1894 |
101 | 103 | 105 | 107 | 109 |
December 23, 1897 | October 12, 1901 | August 1, 1905 | May 19, 1909 | March 8, 1913 |
111 | 113 | 115 | 117 | 119 |
December 24, 1916 | October 12, 1920 | July 31, 1924 | May 19, 1928 | March 7, 1932 |
121 | 123 | 125 | 127 | 129 |
December 25, 1935 | October 12, 1939 | August 1, 1943 | May 20, 1947 | March 7, 1951 |
131 | 133 | 135 | 137 | 139 |
December 25, 1954 | October 12, 1958 | July 31, 1962 | May 20, 1966 | March 7, 1970 |
141 | 143 | 145 | 147 | 149 |
December 24, 1973 | October 12, 1977 | July 31, 1981 | May 19, 1985 | March 7, 1989 |
151 | 153 | 155 | 157 | 159 |
December 24, 1992 | October 12, 1996 | July 31, 2000 | May 19, 2004 | March 7, 2008 |
161 | 163 | 165 | 167 | 169 |
December 24, 2011 | October 13, 2015 | August 1, 2019 | May 19, 2023 | March 8, 2027 |
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