Solar eclipse of May 18, 1920

Last updated
Solar eclipse of May 18, 1920
SE1920May18P.png
Map
Type of eclipse
NaturePartial
Gamma −1.0239
Magnitude 0.9734
Maximum eclipse
Coordinates 69°06′S107°42′E / 69.1°S 107.7°E / -69.1; 107.7
Times (UTC)
Greatest eclipse6:14:55
References
Saros 146 (22 of 76)
Catalog # (SE5000) 9328

A partial solar eclipse occurred at the Moon's descending node of orbit on Tuesday, May 18, 1920, with a magnitude of 0.9734. 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 1920

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 146

Inex

Triad

Solar eclipses of 1916–1920

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 solar eclipses on February 3, 1916 (total), July 30, 1916 (annular), January 23, 1917 (partial), and July 19, 1917 (partial) occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1916 to 1920
Ascending node Descending node
SarosMapGammaSarosMapGamma
111 December 24, 1916
SE1916Dec24P.png
Partial
−1.5321116 June 19, 1917
SE1917Jun19P.png
Partial
1.2857
121 December 14, 1917
SE1917Dec14A.png
Annular
−0.9157126 June 8, 1918
SE1918Jun08T.png
Total
0.4658
131 December 3, 1918
SE1918Dec03A.png
Annular
−0.2387136
1919 eclipse positive.jpg
Totality in Príncipe
May 29, 1919
SE1919May29T.png
Total
−0.2955
141 November 22, 1919
SE1919Nov22A.png
Annular
0.4549146 May 18, 1920
SE1920May18P.png
Partial
−1.0239
151 November 10, 1920
SE1920Nov10P.png
Partial
1.1287

Saros 146

This eclipse is a part of Saros series 146, repeating every 18 years, 11 days, and containing 76 events. The series started with a partial solar eclipse on September 19, 1541. It contains total eclipses from May 29, 1938 through October 7, 2154; hybrid eclipses from October 17, 2172 through November 20, 2226; and annular eclipses from November 30, 2244 through August 10, 2659. The series ends at member 76 as a partial eclipse on December 29, 2893. 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 26 at 5 minutes, 21 seconds on June 30, 1992, and the longest duration of annularity will be produced by member 63 at 3 minutes, 30 seconds on August 10, 2659. All eclipses in this series occur at the Moon’s descending node of orbit. [2]

Series members 16–37 occur between 1801 and 2200:
161718
SE1801Apr13P.png
March 13, 1812
SE1819Apr24P.png
March 24, 1830
SE1837May04P.png
April 3, 1848
192021
SE1855May16P.png
April 15, 1866
SE1873May26P.png
April 25, 1884
SE1902May07P.png
May 7, 1902
222324
SE1920May18P.png
May 18, 1920
SE1938May29T.png
May 29, 1938
SE1956Jun08T.png
June 8, 1956
252627
SE1974Jun20T.png
June 20, 1974
SE1992Jun30T.png
June 30, 1992
SE2010Jul11T.png
July 11, 2010
282930
SE2028Jul22T.png
July 22, 2028
SE2046Aug02T.png
August 2, 2046
SE2064Aug12T.png
August 12, 2064
313233
SE2082Aug24T.png
August 24, 2082
SE2100Sep04T.png
September 4, 2100
SE2118Sep15T.png
September 15, 2118
343536
SE2136Sep26T.png
September 26, 2136
SE2154Oct07T.png
October 7, 2154
SE2172Oct17H.png
October 17, 2172
37
SE2190Oct29H.png
October 29, 2190

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.

22 eclipse events between March 5, 1848 and July 30, 1935
March 5–6December 22–24October 9–11July 29–30May 17–18
108110112114116
SE1848Mar05P.gif
March 5, 1848
SE1859Jul29P.gif
July 29, 1859
SE1863May17P.gif
May 17, 1863
118120122124126
SE1867Mar06A.gif
March 6, 1867
SE1870Dec22T.png
December 22, 1870
SE1874Oct10An.gif
October 10, 1874
SE1878Jul29T.png
July 29, 1878
SE1882May17T.png
May 17, 1882
128130132134136
SE1886Mar05A.gif
March 5, 1886
SE1889Dec22T.png
December 22, 1889
SE1893Oct09A.png
October 9, 1893
SE1897Jul29A.png
July 29, 1897
SE1901May18T.png
May 18, 1901
138140142144146
SE1905Mar06A.png
March 6, 1905
SE1908Dec23H.png
December 23, 1908
SE1912Oct10T.png
October 10, 1912
SE1916Jul30A.png
July 30, 1916
SE1920May18P.png
May 18, 1920
148150152154
SE1924Mar05P.png
March 5, 1924
SE1927Dec24P.png
December 24, 1927
SE1931Oct11P.png
October 11, 1931
SE1935Jul30P.png
July 30, 1935

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.

The partial solar eclipse on November 4, 2116 (part of Saros 164) is also a part of this series but is not included in the table below.

Series members between 1801 and 2029
SE1811Mar24T.gif
March 24, 1811
(Saros 136)
SE1822Feb21A.gif
February 21, 1822
(Saros 137)
SE1833Jan20A.gif
January 20, 1833
(Saros 138)
SE1843Dec21T.gif
December 21, 1843
(Saros 139)
SE1854Nov20H.png
November 20, 1854
(Saros 140)
SE1865Oct19A.png
October 19, 1865
(Saros 141)
SE1876Sep17T.gif
September 17, 1876
(Saros 142)
SE1887Aug19T.png
August 19, 1887
(Saros 143)
SE1898Jul18A.gif
July 18, 1898
(Saros 144)
SE1909Jun17H.png
June 17, 1909
(Saros 145)
SE1920May18P.png
May 18, 1920
(Saros 146)
SE1931Apr18P.png
April 18, 1931
(Saros 147)
SE1942Mar16P.png
March 16, 1942
(Saros 148)
SE1953Feb14P.png
February 14, 1953
(Saros 149)
SE1964Jan14P.png
January 14, 1964
(Saros 150)
SE1974Dec13P.png
December 13, 1974
(Saros 151)
SE1985Nov12T.png
November 12, 1985
(Saros 152)
SE1996Oct12P.png
October 12, 1996
(Saros 153)
SE2007Sep11P.png
September 11, 2007
(Saros 154)
SE2018Aug11P.png
August 11, 2018
(Saros 155)
SE2029Jul11P.png
July 11, 2029
(Saros 156)

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
SE1804Aug05T.gif
August 5, 1804
(Saros 142)
SE1833Jul17T.gif
July 17, 1833
(Saros 143)
SE1862Jun27P.gif
June 27, 1862
(Saros 144)
SE1891Jun06A.gif
June 6, 1891
(Saros 145)
SE1920May18P.png
May 18, 1920
(Saros 146)
SE1949Apr28P.png
April 28, 1949
(Saros 147)
SE1978Apr07P.png
April 7, 1978
(Saros 148)
SE2007Mar19P.png
March 19, 2007
(Saros 149)
SE2036Feb27P.png
February 27, 2036
(Saros 150)
SE2065Feb05P.png
February 5, 2065
(Saros 151)
SE2094Jan16T.png
January 16, 2094
(Saros 152)
Saros153 15van70 SE2122Dec28A.jpg
December 28, 2122
(Saros 153)
Saros154 14van71 SE2151Dec08A.jpg
December 8, 2151
(Saros 154)
Saros155 15van71 SE2180Nov17T.jpg
November 17, 2180
(Saros 155)

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 146". eclipse.gsfc.nasa.gov.

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References