Solar eclipse of May 30, 1946

Last updated
Solar eclipse of May 30, 1946
SE1946May30P.png
Map
Type of eclipse
NaturePartial
Gamma −1.0711
Magnitude 0.8865
Maximum eclipse
Coordinates 64°06′S101°00′W / 64.1°S 101°W / -64.1; -101
Times (UTC)
Greatest eclipse21:00:24
References
Saros 117 (65 of 71)
Catalog # (SE5000) 9390

A partial solar eclipse occurred at the Moon's ascending node of orbit on Thursday, May 30, 1946, [1] with a magnitude of 0.8865. 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 partial solar eclipses in 1946, with the others occurring on January 3, June 29, and November 23.

A partial eclipse was visible for parts of eastern Oceania and western South America.

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]

May 30, 1946 Solar Eclipse Times
EventTime (UTC)
First Penumbral External Contact1946 May 30 at 19:08:19.4 UTC
Equatorial Conjunction1946 May 30 at 20:32:06.1 UTC
Ecliptic Conjunction1946 May 30 at 20:49:47.0 UTC
Greatest Eclipse1946 May 30 at 21:00:23.7 UTC
Last Penumbral External Contact1946 May 30 at 22:52:40.4 UTC
May 30, 1946 Solar Eclipse Parameters
ParameterValue
Eclipse Magnitude0.88652
Eclipse Obscuration0.86992
Gamma−1.07105
Sun Right Ascension04h28m24.9s
Sun Declination+21°46'41.4"
Sun Semi-Diameter15'46.4"
Sun Equatorial Horizontal Parallax08.7"
Moon Right Ascension04h29m34.6s
Moon Declination+20°43'10.9"
Moon Semi-Diameter16'43.0"
Moon Equatorial Horizontal Parallax1°01'21.2"
ΔT27.5 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 May–June 1946
May 30
Ascending node (new moon)
June 14
Descending node (full moon)
June 29
Ascending node (new moon)
SE1946May30P.png Lunar eclipse chart close-1946Jun14.png SE1946Jun29P.png
Partial solar eclipse
Solar Saros 117
Total lunar eclipse
Lunar Saros 129
Partial solar eclipse
Solar Saros 155

Eclipses in 1946

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 117

Inex

Triad

Solar eclipses of 1946–1949

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 partial solar eclipses on January 3, 1946 and June 29, 1946 occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1946 to 1949
Ascending node Descending node
SarosMapGammaSarosMapGamma
117 May 30, 1946
SE1946May30P.png
Partial
−1.0711122 November 23, 1946
SE1946Nov23P.png
Partial
1.105
127 May 20, 1947
SE1947May20T.png
Total
−0.3528132 November 12, 1947
SE1947Nov12A.png
Annular
0.3743
137 May 9, 1948
SE1948May09A.png
Annular
0.4133142 November 1, 1948
SE1948Nov01T.png
Total
−0.3517
147 April 28, 1949
SE1949Apr28P.png
Partial
1.2068152 October 21, 1949
SE1949Oct21P.png
Partial
−1.027

Saros 117

This eclipse is a part of Saros series 117, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on June 24, 792 AD. It contains annular eclipses from September 18, 936 AD through May 14, 1333; hybrid eclipses from May 25, 1351 through July 8, 1423; and total eclipses from July 18, 1441 through May 19, 1928. The series ends at member 71 as a partial eclipse on August 3, 2054. 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 9 minutes, 26 seconds on December 3, 1062, and the longest duration of totality was produced by member 62 at 4 minutes, 19 seconds on April 26, 1892. All eclipses in this series occur at the Moon’s ascending 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 ascending node.

22 eclipse events between January 5, 1935 and August 11, 2018
January 4–5October 23–24August 10–12May 30–31March 18–19
111113115117119
SE1935Jan05P.png
January 5, 1935
SE1942Aug12P.png
August 12, 1942
SE1946May30P.png
May 30, 1946
SE1950Mar18A.png
March 18, 1950
121123125127129
SE1954Jan05A.png
January 5, 1954
SE1957Oct23T.png
October 23, 1957
SE1961Aug11A.png
August 11, 1961
SE1965May30T.png
May 30, 1965
SE1969Mar18A.png
March 18, 1969
131133135137139
SE1973Jan04A.png
January 4, 1973
SE1976Oct23T.png
October 23, 1976
SE1980Aug10A.png
August 10, 1980
SE1984May30A.png
May 30, 1984
SE1988Mar18T.png
March 18, 1988
141143145147149
SE1992Jan04A.png
January 4, 1992
SE1995Oct24T.png
October 24, 1995
SE1999Aug11T.png
August 11, 1999
SE2003May31A.png
May 31, 2003
SE2007Mar19P.png
March 19, 2007
151153155
SE2011Jan04P.png
January 4, 2011
SE2014Oct23P.png
October 23, 2014
SE2018Aug11P.png
August 11, 2018

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 1837 and 2200
SE1837Apr05P.png
April 5, 1837
(Saros 107)
SE1848Mar05P.gif
March 5, 1848
(Saros 108)
SE1859Feb03P.png
February 3, 1859
(Saros 109)
SE1880Dec02P.gif
December 2, 1880
(Saros 111)
SE1913Aug31P.png
August 31, 1913
(Saros 114)
SE1924Jul31P.png
July 31, 1924
(Saros 115)
SE1935Jun30P.png
June 30, 1935
(Saros 116)
SE1946May30P.png
May 30, 1946
(Saros 117)
SE1957Apr30A.png
April 30, 1957
(Saros 118)
SE1968Mar28P.png
March 28, 1968
(Saros 119)
SE1979Feb26T.png
February 26, 1979
(Saros 120)
SE1990Jan26A.png
January 26, 1990
(Saros 121)
SE2000Dec25P.png
December 25, 2000
(Saros 122)
SE2011Nov25P.png
November 25, 2011
(Saros 123)
SE2022Oct25P.png
October 25, 2022
(Saros 124)
SE2033Sep23P.png
September 23, 2033
(Saros 125)
SE2044Aug23T.png
August 23, 2044
(Saros 126)
SE2055Jul24T.png
July 24, 2055
(Saros 127)
SE2066Jun22A.png
June 22, 2066
(Saros 128)
SE2077May22T.png
May 22, 2077
(Saros 129)
SE2088Apr21T.png
April 21, 2088
(Saros 130)
SE2099Mar21A.png
March 21, 2099
(Saros 131)
SE2110Feb18A.png
February 18, 2110
(Saros 132)
SE2121Jan19T.png
January 19, 2121
(Saros 133)
SE2131Dec19A.png
December 19, 2131
(Saros 134)
SE2142Nov17A.png
November 17, 2142
(Saros 135)
SE2153Oct17T.png
October 17, 2153
(Saros 136)
SE2164Sep16A.png
September 16, 2164
(Saros 137)
SE2175Aug16A.png
August 16, 2175
(Saros 138)
SE2186Jul16T.png
July 16, 2186
(Saros 139)
SE2197Jun15A.png
June 15, 2197
(Saros 140)

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. "May 30, 1946 Partial Solar Eclipse". timeanddate. Retrieved 4 August 2024.
  2. "Partial Solar Eclipse of 1946 May 30". EclipseWise.com. Retrieved 4 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 117". eclipse.gsfc.nasa.gov.