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Solar eclipse of July 31, 1962

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Solar eclipse of July 31, 1962
Map
Type of eclipse
NatureAnnular
Gamma−0.113
Magnitude0.9716
Maximum eclipse
Duration213 s (3 min 33 s)
Coordinates12°00′N 5°42′W / 12°N 5.7°W / 12; -5.7
Max. width of band103 km (64 mi)
Times (UTC)
Greatest eclipse12:25:33
References
Saros135 (36 of 71)
Catalog # (SE5000)9425

An annular solar eclipse occurred at the Moon's ascending node of orbit on Tuesday, July 31, 1962,[1] with a magnitude of 0.9716. 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. Occurring about 4.75 days before apogee (on August 5, 1962, at 6:40 UTC), the Moon's apparent diameter was smaller.[2]

Places inside the annular eclipse included Venezuela, northern Roraima in Brazil, Guyana, Dutch Guiana (today's Suriname) including the capital city Paramaribo, Senegal, Gambia Colony and Protectorate (today's Gambia) including the southern part of the capital city Banjul, Mali including the capital city Bamako, Upper Volta (today's Burkina Faso), Ghana, Togo, Dahomey (today's Benin), Nigeria, Cameroon including the capital city Yaoundé, Congo-Brazzaville, Congo-Léopoldville (today's DR Congo), Tanganyika (now belonging to Tanzania), northeastern tip of Portuguese Mozambique (today's Mozambique), French Comoros (today's Comoros), Mayotte, and the Malagasy Republic (today's Madagascar). The greatest eclipse was in the area of Kouoro, Mali at 12 N, 5.7 W at 12:25 (UTC) and lasted for 3 minutes.[3] A partial eclipse was visible for parts of the Caribbean, northern South America, Africa, Southern Europe, and the Middle East.

Eclipse details

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Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.[4]

July 31, 1962 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1962 July 31 at 09:26:25.2 UTC
First Umbral External Contact 1962 July 31 at 10:29:36.6 UTC
First Central Line 1962 July 31 at 10:31:02.3 UTC
First Umbral Internal Contact 1962 July 31 at 10:32:28.1 UTC
First Penumbral Internal Contact 1962 July 31 at 11:36:22.9 UTC
Greatest Duration 1962 July 31 at 12:19:39.3 UTC
Ecliptic Conjunction 1962 July 31 at 12:24:14.3 UTC
Greatest Eclipse 1962 July 31 at 12:25:32.5 UTC
Equatorial Conjunction 1962 July 31 at 12:27:38.6 UTC
Last Penumbral Internal Contact 1962 July 31 at 13:14:37.8 UTC
Last Umbral Internal Contact 1962 July 31 at 14:18:33.6 UTC
Last Central Line 1962 July 31 at 14:20:01.9 UTC
Last Umbral External Contact 1962 July 31 at 14:21:30.3 UTC
Last Penumbral External Contact 1962 July 31 at 15:24:44.6 UTC
July 31, 1962 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.97158
Eclipse Obscuration 0.94397
Gamma −0.11296
Sun Right Ascension 08h40m53.9s
Sun Declination +18°19'06.7"
Sun Semi-Diameter 15'45.4"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 08h40m49.8s
Moon Declination +18°12'57.5"
Moon Semi-Diameter 15'04.6"
Moon Equatorial Horizontal Parallax 0°55'19.7"
ΔT 34.3 s

Eclipse season

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This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of July–August 1962
July 17
Descending node (full moon)
July 31
Ascending node (new moon)
August 15
Descending node (full moon)
Penumbral lunar eclipse
Lunar Saros 109
Annular solar eclipse
Solar Saros 135
Penumbral lunar eclipse
Lunar Saros 147
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Eclipses in 1962

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Solar Saros 135

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Inex

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Triad

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Solar eclipses of 1961–1964

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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.[5]

The partial solar eclipses on June 10, 1964 and December 4, 1964 occur in the next lunar year eclipse set.

Solar eclipse series sets from 1961 to 1964
Descending node   Ascending node
Saros Map Gamma Saros Map Gamma
120
February 15, 1961

Total
0.883 125 August 11, 1961

Annular
−0.8859
130 February 5, 1962

Total
0.2107 135 July 31, 1962

Annular
−0.113
140 January 25, 1963

Annular
−0.4898 145 July 20, 1963

Total
0.6571
150 January 14, 1964

Partial
−1.2354 155 July 9, 1964

Partial
1.3623

Saros 135

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This eclipse is a part of Saros series 135, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on July 5, 1331. It contains annular eclipses from October 21, 1511 through February 24, 2305; hybrid eclipses on March 8, 2323 and March 18, 2341; and total eclipses from March 29, 2359 through May 22, 2449. The series ends at member 71 as a partial eclipse on August 17, 2593. 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 16 at 10 minutes, 41 seconds on December 24, 1601, and the longest duration of totality will be produced by member 62 at 2 minutes, 27 seconds on May 12, 2431. All eclipses in this series occur at the Moon’s ascending node of orbit.[6]

Series members 28–49 occur between 1801 and 2200:
28 29 30

May 5, 1818

May 15, 1836

May 26, 1854
31 32 33

June 6, 1872

June 17, 1890

June 28, 1908
34 35 36

July 9, 1926

July 20, 1944

July 31, 1962
37 38 39

August 10, 1980

August 22, 1998

September 1, 2016
40 42 42

September 12, 2034

September 22, 2052

October 4, 2070
43 44 45

October 14, 2088

October 26, 2106

November 6, 2124
46 47 48

November 17, 2142

November 27, 2160

December 9, 2178
49

December 19, 2196

Metonic series

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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 July 31–August 1 May 19–20 March 7
111 113 115 117 119

December 24, 1916

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

December 24, 1992

October 12, 1996

July 31, 2000

Tritos series

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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 1801 and 2200

October 9, 1809
(Saros 121)

September 7, 1820
(Saros 122)

August 7, 1831
(Saros 123)

July 8, 1842
(Saros 124)

June 6, 1853
(Saros 125)

May 6, 1864
(Saros 126)

April 6, 1875
(Saros 127)

March 5, 1886
(Saros 128)

February 1, 1897
(Saros 129)

January 3, 1908
(Saros 130)

December 3, 1918
(Saros 131)

November 1, 1929
(Saros 132)

October 1, 1940
(Saros 133)

September 1, 1951
(Saros 134)

July 31, 1962
(Saros 135)

June 30, 1973
(Saros 136)

May 30, 1984
(Saros 137)

April 29, 1995
(Saros 138)

March 29, 2006
(Saros 139)

February 26, 2017
(Saros 140)

January 26, 2028
(Saros 141)

December 26, 2038
(Saros 142)

November 25, 2049
(Saros 143)

October 24, 2060
(Saros 144)

September 23, 2071
(Saros 145)

August 24, 2082
(Saros 146)

July 23, 2093
(Saros 147)

June 22, 2104
(Saros 148)

May 24, 2115
(Saros 149)

April 22, 2126
(Saros 150)

March 21, 2137
(Saros 151)

February 19, 2148
(Saros 152)

January 19, 2159
(Saros 153)

December 18, 2169
(Saros 154)

November 17, 2180
(Saros 155)

October 18, 2191
(Saros 156)

Inex series

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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

November 9, 1817
(Saros 130)

October 20, 1846
(Saros 131)

September 29, 1875
(Saros 132)

September 9, 1904
(Saros 133)

August 21, 1933
(Saros 134)

July 31, 1962
(Saros 135)

July 11, 1991
(Saros 136)

June 21, 2020
(Saros 137)

May 31, 2049
(Saros 138)

May 11, 2078
(Saros 139)

April 23, 2107
(Saros 140)

April 1, 2136
(Saros 141)

March 12, 2165
(Saros 142)

February 21, 2194
(Saros 143)

Notes

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  1. ^ "July 31, 1962 Annular Solar Eclipse". timeanddate. Retrieved 7 August 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 7 August 2024.
  3. ^ "Solar eclipse of July 31, 1962". NASA. Retrieved March 21, 2017.
  4. ^ "Annular Solar Eclipse of 1962 Jul 31". EclipseWise.com. Retrieved 7 August 2024.
  5. ^ 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.
  6. ^ "NASA - Catalog of Solar Eclipses of Saros 135". eclipse.gsfc.nasa.gov.

References

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