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Solar eclipse of December 4, 1983

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Solar eclipse of December 4, 1983
Map
Type of eclipse
NatureAnnular
Gamma0.4015
Magnitude0.9666
Maximum eclipse
Duration241 s (4 min 1 s)
Coordinates0°54′N 4°42′W / 0.9°N 4.7°W / 0.9; -4.7
Max. width of band131 km (81 mi)
Times (UTC)
Greatest eclipse12:31:15
References
Saros132 (44 of 71)
Catalog # (SE5000)9473

An annular solar eclipse occurred at the Moon's descending node of the orbit on December 4, 1983. 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. Annularity was visible in Cape Verde, Annobón Island of Equatorial Guinea, Gabon, the People's Republic of Congo (today's Republic of Congo), Zaire (today's Democratic Republic of Congo), northern Uganda, southern Sudan (today's South Sudan), northwestern Kenya, Ethiopia and Somalia. The Sun's altitude was 66°. Occurring 6.5 days before apogee (Apogee on December 11, 1983), the Moon's apparent diameter was near the average diameter.

Eclipses in 1983

Solar eclipses of 1982–1985

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 January 25, 1982 and July 20, 1982 occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1982 to 1985
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
117 June 21, 1982

Partial
−1.2102 122 December 15, 1982

Partial
1.1293
127 June 11, 1983

Total
−0.4947 132 December 4, 1983

Annular
0.4015
137 May 30, 1984

Annular
0.2755 142

Partial in Gisborne,
New Zealand
November 22, 1984

Total
−0.3132
147 May 19, 1985

Partial
1.072 152 November 12, 1985

Total
−0.9795

Saros 132

This eclipse is a part of Saros series 132, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on August 13, 1208. It contains annular eclipses from March 17, 1569 through March 12, 2146; hybrid eclipses on March 23, 2164 and April 3, 2182; and total eclipses from April 14, 2200 through June 19, 2308. The series ends at member 71 as a partial eclipse on September 25, 2470. 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 25 at 6 minutes, 56 seconds on May 9, 1641, and the longest duration of totality will be produced by member 61 at 2 minutes, 14 seconds on June 8, 2290. All eclipses in this series occur at the Moon’s descending node of orbit.[2]

Series members 34–56 occur between 1801 and 2200:
34 35 36

August 17, 1803

August 27, 1821

September 7, 1839
37 38 39

September 18, 1857

September 29, 1875

October 9, 1893
40 41 42

October 22, 1911

November 1, 1929

November 12, 1947
43 44 45

November 23, 1965

December 4, 1983

December 14, 2001
46 47 48

December 26, 2019

January 5, 2038

January 16, 2056
49 50 51

January 27, 2074

February 7, 2092

February 18, 2110
52 53 54

March 1, 2128

March 12, 2146

March 23, 2164
55 56

April 3, 2182

April 14, 2200

Inex series

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

April 4, 1810
(Saros 126)

March 15, 1839
(Saros 127)

February 23, 1868
(Saros 128)

February 1, 1897
(Saros 129)

January 14, 1926
(Saros 130)

December 25, 1954
(Saros 131)

December 4, 1983
(Saros 132)

November 13, 2012
(Saros 133)

October 25, 2041
(Saros 134)

October 4, 2070
(Saros 135)

September 14, 2099
(Saros 136)

August 25, 2128
(Saros 137)

August 5, 2157
(Saros 138)

July 16, 2186
(Saros 139)

Metonic series

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

Notes

  1. ^ 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.
  2. ^ "NASA - Catalog of Solar Eclipses of Saros 132". eclipse.gsfc.nasa.gov.

References