Solar eclipse of June 19, 1917

Last updated
Solar eclipse of June 19, 1917
SE1917Jun19P.png
Map
Type of eclipse
NaturePartial
Gamma 1.2857
Magnitude 0.4729
Maximum eclipse
Coordinates 66°12′N150°06′E / 66.2°N 150.1°E / 66.2; 150.1
Times (UTC)
Greatest eclipse13:16:21
References
Saros 116 (67 of 70)
Catalog # (SE5000) 9322

A partial solar eclipse occurred at the Moon's descending node of orbit on Tuesday, June 19, 1917, [1] with a magnitude of 0.4729. 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

This was the second of four solar eclipses in 1917, with the others occurring on January 23, July 19, and December 14.

A partial eclipse was visible for parts of northern North America, Northern Europe, and North Asia.

Eclipse details

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. [2]

June 19, 1917 Solar Eclipse Times
EventTime (UTC)
First Penumbral External Contact1917 June 19 at 11:36:05.9 UTC
Ecliptic Conjunction1917 June 19 at 13:02:07.8 UTC
Equatorial Conjunction1917 June 19 at 13:04:46.6 UTC
Greatest Eclipse1917 June 19 at 13:16:20.5 UTC
Last Penumbral External Contact1917 June 19 at 14:56:44.7 UTC
June 19, 1917 Solar Eclipse Parameters
ParameterValue
Eclipse Magnitude0.47297
Eclipse Obscuration0.35726
Gamma1.28565
Sun Right Ascension05h49m46.5s
Sun Declination+23°25'46.5"
Sun Semi-Diameter15'44.3"
Sun Equatorial Horizontal Parallax08.7"
Moon Right Ascension05h50m11.1s
Moon Declination+24°36'49.5"
Moon Semi-Diameter15'08.6"
Moon Equatorial Horizontal Parallax0°55'34.6"
ΔT19.6 s

Eclipse season

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 June–July 1917
June 19
Descending node (new moon)
July 4
Ascending node (full moon)
July 19
Descending node (new moon)
SE1917Jun19P.png Lunar eclipse chart close-1917Jul04.png SE1917Jul19P.png
Partial solar eclipse
Solar Saros 116
Total lunar eclipse
Lunar Saros 128
Partial solar eclipse
Solar Saros 154

Eclipses in 1917

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 116

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. [3]

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 116

This eclipse is a part of Saros series 116, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on June 23, 727 AD. It contains annular eclipses from October 10, 907 AD through May 6, 1845. There are no hybrid or total eclipses in this set. The series ends at member 70 as a partial eclipse on July 22, 1971. 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 51 at 12 minutes, 2 seconds on December 25, 1628. All eclipses in this series occur at the Moon’s descending node of orbit. [4]

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 April 8, 1902 and August 31, 1989
April 7–8January 24–25November 12August 31–September 1June 19–20
108110112114116
SE1902Apr08P.png
April 8, 1902
SE1913Aug31P.png
August 31, 1913
SE1917Jun19P.png
June 19, 1917
118120122124126
SE1921Apr08A.png
April 8, 1921
SE1925Jan24T.png
January 24, 1925
SE1928Nov12P.png
November 12, 1928
SE1932Aug31T.png
August 31, 1932
SE1936Jun19T.png
June 19, 1936
128130132134136
SE1940Apr07A.png
April 7, 1940
SE1944Jan25T.png
January 25, 1944
SE1947Nov12A.png
November 12, 1947
SE1951Sep01A.png
September 1, 1951
SE1955Jun20T.png
June 20, 1955
138140142144146
SE1959Apr08A.png
April 8, 1959
SE1963Jan25A.png
January 25, 1963
SE1966Nov12T.png
November 12, 1966
SE1970Aug31A.png
August 31, 1970
SE1974Jun20T.png
June 20, 1974
148150152154
SE1978Apr07P.png
April 7, 1978
SE1982Jan25P.png
January 25, 1982
SE1985Nov12T.png
November 12, 1985
SE1989Aug31P.png
August 31, 1989

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 1801 and 2200
SE1819Mar25P.gif
March 25, 1819
(Saros 107)
SE1830Feb23P.gif
February 23, 1830
(Saros 108)
SE1841Jan22P.gif
January 22, 1841
(Saros 109)
SE1862Nov21P.gif
November 21, 1862
(Saros 111)
SE1895Aug20P.gif
August 20, 1895
(Saros 114)
SE1906Jul21P.png
July 21, 1906
(Saros 115)
SE1917Jun19P.png
June 19, 1917
(Saros 116)
SE1928May19T.png
May 19, 1928
(Saros 117)
SE1939Apr19A.png
April 19, 1939
(Saros 118)
SE1950Mar18A.png
March 18, 1950
(Saros 119)
SE1961Feb15T.png
February 15, 1961
(Saros 120)
SE1972Jan16A.png
January 16, 1972
(Saros 121)
SE1982Dec15P.png
December 15, 1982
(Saros 122)
SE1993Nov13P.png
November 13, 1993
(Saros 123)
SE2004Oct14P.png
October 14, 2004
(Saros 124)
SE2015Sep13P.png
September 13, 2015
(Saros 125)
SE2026Aug12T.png
August 12, 2026
(Saros 126)
SE2037Jul13T.png
July 13, 2037
(Saros 127)
SE2048Jun11A.png
June 11, 2048
(Saros 128)
SE2059May11T.png
May 11, 2059
(Saros 129)
SE2070Apr11T.png
April 11, 2070
(Saros 130)
SE2081Mar10A.png
March 10, 2081
(Saros 131)
SE2092Feb07A.png
February 7, 2092
(Saros 132)
SE2103Jan08T.png
January 8, 2103
(Saros 133)
SE2113Dec08A.png
December 8, 2113
(Saros 134)
SE2124Nov06A.png
November 6, 2124
(Saros 135)
SE2135Oct07T.png
October 7, 2135
(Saros 136)
SE2146Sep06A.png
September 6, 2146
(Saros 137)
SE2157Aug05A.png
August 5, 2157
(Saros 138)
SE2168Jul05T.png
July 5, 2168
(Saros 139)
SE2179Jun05A.png
June 5, 2179
(Saros 140)
SE2190May04A.png
May 4, 2190
(Saros 141)

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)

Notes

  1. "June 19, 1917 Partial Solar Eclipse". timeanddate. Retrieved 1 August 2024.
  2. "Partial Solar Eclipse of 1917 Jun 19". EclipseWise.com. Retrieved 1 August 2024.
  3. 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.
  4. "NASA - Catalog of Solar Eclipses of Saros 116". eclipse.gsfc.nasa.gov.

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References