Solar eclipse of May 11, 1975

Last updated
Solar eclipse of May 11, 1975
SE1975May11P.png
Map
Type of eclipse
NaturePartial
Gamma 1.0647
Magnitude 0.8636
Maximum eclipse
Coordinates 69°42′N80°12′W / 69.7°N 80.2°W / 69.7; -80.2
Times (UTC)
Greatest eclipse7:17:33
References
Saros 118 (66 of 72)
Catalog # (SE5000) 9454

A partial solar eclipse occurred at the Moon's descending node of orbit on Sunday, May 11, 1975, with a magnitude of 0.8636. 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.

Contents

Eclipses in 1975

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 118

Inex

Triad

Solar eclipses of 1975–1978

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 1975 to 1978
Descending node Ascending node
SarosMapGammaSarosMapGamma
118 May 11, 1975
SE1975May11P.png
Partial
1.0647123 November 3, 1975
SE1975Nov03P.png
Partial
−1.0248
128 April 29, 1976
SE1976Apr29A.png
Annular
0.3378133 October 23, 1976
SE1976Oct23T.png
Total
−0.327
138 April 18, 1977
SE1977Apr18A.png
Annular
−0.399143 October 12, 1977
SE1977Oct12T.png
Total
0.3836
148 April 7, 1978
SE1978Apr07P.png
Partial
−1.1081153 October 2, 1978
SE1978Oct02P.png
Partial
1.1616

Saros 118

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]

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 22, 1971 and July 22, 2047
July 22May 9–11February 26–27December 14–15October 2–3
116118120122124
SE1971Jul22P.png
July 22, 1971
SE1975May11P.png
May 11, 1975
SE1979Feb26T.png
February 26, 1979
SE1982Dec15P.png
December 15, 1982
SE1986Oct03H.png
October 3, 1986
126128130132134
SE1990Jul22T.png
July 22, 1990
SE1994May10A.png
May 10, 1994
SE1998Feb26T.png
February 26, 1998
SE2001Dec14A.png
December 14, 2001
SE2005Oct03A.png
October 3, 2005
136138140142144
SE2009Jul22T.png
July 22, 2009
SE2013May10A.png
May 10, 2013
SE2017Feb26A.png
February 26, 2017
SE2020Dec14T.png
December 14, 2020
SE2024Oct02A.png
October 2, 2024
146148150152154
SE2028Jul22T.png
July 22, 2028
SE2032May09A.png
May 9, 2032
SE2036Feb27P.png
February 27, 2036
SE2039Dec15T.png
December 15, 2039
SE2043Oct03A.png
October 3, 2043
156
SE2047Jul22P.png
July 22, 2047

Tritos series

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 1866 and 2200
SE1866Mar16P.gif
March 16, 1866
(Saros 108)
SE1898Dec13P.gif
December 13, 1898
(Saros 111)
SE1931Sep12P.png
September 12, 1931
(Saros 114)
SE1942Aug12P.png
August 12, 1942
(Saros 115)
SE1953Jul11P.png
July 11, 1953
(Saros 116)
SE1964Jun10P.png
June 10, 1964
(Saros 117)
SE1975May11P.png
May 11, 1975
(Saros 118)
SE1986Apr09P.png
April 9, 1986
(Saros 119)
SE1997Mar09T.png
March 9, 1997
(Saros 120)
SE2008Feb07A.png
February 7, 2008
(Saros 121)
SE2019Jan06P.png
January 6, 2019
(Saros 122)
SE2029Dec05P.png
December 5, 2029
(Saros 123)
SE2040Nov04P.png
November 4, 2040
(Saros 124)
SE2051Oct04P.png
October 4, 2051
(Saros 125)
SE2062Sep03P.png
September 3, 2062
(Saros 126)
SE2073Aug03T.png
August 3, 2073
(Saros 127)
SE2084Jul03A.png
July 3, 2084
(Saros 128)
SE2095Jun02T.png
June 2, 2095
(Saros 129)
SE2106May03T.png
May 3, 2106
(Saros 130)
SE2117Apr02A.png
April 2, 2117
(Saros 131)
SE2128Mar01A.png
March 1, 2128
(Saros 132)
SE2139Jan30T.png
January 30, 2139
(Saros 133)
SE2149Dec30A.png
December 30, 2149
(Saros 134)
SE2160Nov27A.png
November 27, 2160
(Saros 135)
SE2171Oct29T.png
October 29, 2171
(Saros 136)
SE2182Sep27A.png
September 27, 2182
(Saros 137)
SE2193Aug26A.png
August 26, 2193
(Saros 138)

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
SE1801Sep08P.png
September 8, 1801
(Saros 112)
SE1830Aug18P.gif
August 18, 1830
(Saros 113)
SE1859Jul29P.gif
July 29, 1859
(Saros 114)
SE1888Jul09P.gif
July 9, 1888
(Saros 115)
SE1917Jun19P.png
June 19, 1917
(Saros 116)
SE1946May30P.png
May 30, 1946
(Saros 117)
SE1975May11P.png
May 11, 1975
(Saros 118)
SE2004Apr19P.png
April 19, 2004
(Saros 119)
SE2033Mar30T.png
March 30, 2033
(Saros 120)
SE2062Mar11P.png
March 11, 2062
(Saros 121)
SE2091Feb18P.png
February 18, 2091
(Saros 122)
Saros123 59van70 SE2120Jan30P.jpg
January 30, 2120
(Saros 123)
Saros124 62van73 SE2149Jan09P.jpg
January 9, 2149
(Saros 124)
Saros125 63van73 SE2177Dec20P.jpg
December 20, 2177
(Saros 125)

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References

  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 118". eclipse.gsfc.nasa.gov.