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Solar eclipse of April 6, 1913

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Solar eclipse of April 6, 1913
Map
Type of eclipse
NaturePartial
Gamma1.3147
Magnitude0.4244
Maximum eclipse
Coordinates61°12′N 175°42′E / 61.2°N 175.7°E / 61.2; 175.7
Times (UTC)
Greatest eclipse17:33:07
References
Saros147 (17 of 80)
Catalog # (SE5000)9310

A partial solar eclipse occurred at the Moon's ascending node of orbit on Sunday, April 6, 1913,[1][2][3] with a magnitude of 0.4244. 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.

A partial eclipse was visible for parts of eastern Russia, northwestern North America.

Eclipse details

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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.[4]

April 6, 1913 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1913 April 06 at 15:54:06.5 UTC
Greatest Eclipse 1913 April 06 at 17:33:07.1 UTC
Ecliptic Conjunction 1913 April 06 at 17:48:01.1 UTC
Equatorial Conjunction 1913 April 06 at 18:55:10.9 UTC
Last Penumbral External Contact 1913 April 06 at 19:11:31.1 UTC
April 6, 1913 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.42437
Eclipse Obscuration 0.30366
Gamma 1.31475
Sun Right Ascension 01h00m06.2s
Sun Declination +06°25'02.8"
Sun Semi-Diameter 15'58.5"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 00h57m49.4s
Moon Declination +07°28'25.6"
Moon Semi-Diameter 14'56.5"
Moon Equatorial Horizontal Parallax 0°54'50.2"
ΔT 15.0 s

Eclipse season

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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.

Eclipse season of March–April 1913
March 22
Descending node (full moon)
April 6
Ascending node (new moon)
Total lunar eclipse
Lunar Saros 121
Partial solar eclipse
Solar Saros 147
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Eclipses in 1913

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Solar Saros 147

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Inex

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Triad

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Solar eclipses of 1910–1913

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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.[5]

The partial solar eclipse on August 31, 1913 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 1910 to 1913
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
117 May 9, 1910

Total
−0.9437 122 November 2, 1910

Partial
1.0603
127 April 28, 1911

Total
−0.2294 132 October 22, 1911

Annular
0.3224
137 April 17, 1912

Hybrid
0.528 142 October 10, 1912

Total
−0.4149
147 April 6, 1913

Partial
1.3147 152 September 30, 1913

Partial
−1.1005

Saros 147

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This eclipse is a part of Saros series 147, repeating every 18 years, 11 days, and containing 80 events. The series started with a partial solar eclipse on October 12, 1624. It contains annular eclipses from May 31, 2003 through July 31, 2706. There are no hybrid or total eclipses in this set. The series ends at member 80 as a partial eclipse on February 24, 3049. 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 will be produced by member 38 at 9 minutes, 41 seconds on November 21, 2291. All eclipses in this series occur at the Moon’s ascending node of orbit.[6]

Series members 11–32 occur between 1801 and 2200:
11 12 13

January 30, 1805

February 11, 1823

February 21, 1841
14 15 16

March 4, 1859

March 15, 1877

March 26, 1895
17 18 19

April 6, 1913

April 18, 1931

April 28, 1949
20 21 22

May 9, 1967

May 19, 1985

May 31, 2003
23 24 25

June 10, 2021

June 21, 2039

July 1, 2057
26 27 28

July 13, 2075

July 23, 2093

August 4, 2111
29 30 31

August 15, 2129

August 26, 2147

September 5, 2165
32

September 16, 2183

Metonic series

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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.

25 eclipse events between April 5, 1837 and June 17, 1928
April 5–6 January 22–23 November 10–11 August 28–30 June 17–18
107 109 111 113 115

April 5, 1837

January 22, 1841

November 10, 1844

August 28, 1848

June 17, 1852
117 119 121 123 125

April 5, 1856

January 23, 1860

November 11, 1863

August 29, 1867

June 18, 1871
127 129 131 133 135

April 6, 1875

January 22, 1879

November 10, 1882

August 29, 1886

June 17, 1890
137 139 141 143 145

April 6, 1894

January 22, 1898

November 11, 1901

August 30, 1905

June 17, 1909
147 149 151 153 155

April 6, 1913

January 23, 1917

November 10, 1920

August 30, 1924

June 17, 1928

Tritos series

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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 October 24, 2098 (part of Saros 164) is also a part of this series but is not included in the table below.

Series members between 1801 and 2011

February 11, 1804
(Saros 137)

January 10, 1815
(Saros 138)

December 9, 1825
(Saros 139)

November 9, 1836
(Saros 140)

October 9, 1847
(Saros 141)

September 7, 1858
(Saros 142)

August 7, 1869
(Saros 143)

July 7, 1880
(Saros 144)

June 6, 1891
(Saros 145)

May 7, 1902
(Saros 146)

April 6, 1913
(Saros 147)

March 5, 1924
(Saros 148)

February 3, 1935
(Saros 149)

January 3, 1946
(Saros 150)

December 2, 1956
(Saros 151)

November 2, 1967
(Saros 152)

October 2, 1978
(Saros 153)

August 31, 1989
(Saros 154)

July 31, 2000
(Saros 155)

July 1, 2011
(Saros 156)

Inex series

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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

June 5, 1826
(Saros 144)

May 16, 1855
(Saros 145)

April 25, 1884
(Saros 146)

April 6, 1913
(Saros 147)

March 16, 1942
(Saros 148)

February 25, 1971
(Saros 149)

February 5, 2000
(Saros 150)

January 14, 2029
(Saros 151)

December 26, 2057
(Saros 152)

December 6, 2086
(Saros 153)

November 16, 2115
(Saros 154)

October 26, 2144
(Saros 155)

October 7, 2173
(Saros 156)

References

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  1. ^ "April 6, 1913 Partial Solar Eclipse". timeanddate. Retrieved 31 July 2024.
  2. ^ "APRIL HEAVENS ARE DESCRIBED". The Times-Democrat. New Orleans, Louisiana. 1913-04-06. p. 59. Retrieved 2023-11-03 – via Newspapers.com.
  3. ^ "THE HEAVENS IN APRIL". The Commercial Appeal. Memphis, Tennessee. 1913-04-06. p. 74. Retrieved 2023-11-03 – via Newspapers.com.
  4. ^ "Partial Solar Eclipse of 1913 Apr 06". EclipseWise.com. Retrieved 31 July 2024.
  5. ^ 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.
  6. ^ "NASA - Catalog of Solar Eclipses of Saros 147". eclipse.gsfc.nasa.gov.
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