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Solar eclipse of September 30, 1913

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Solar eclipse of September 30, 1913
Map
Type of eclipse
NaturePartial
Gamma−1.1005
Magnitude0.8252
Maximum eclipse
Coordinates61°00′S 11°36′E / 61°S 11.6°E / -61; 11.6
Times (UTC)
Greatest eclipse4:45:49
References
Saros152 (7 of 70)
Catalog # (SE5000)9311

A partial solar eclipse occurred at the Moon's descending node of orbit on Tuesday, September 30, 1913,[1][2][3][4][5] with a magnitude of 0.8252. 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 Southern Africa and Antarctica.

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.[6]

September 30, 1913 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1913 September 30 at 02:55:44.7 UTC
Greatest Eclipse 1913 September 30 at 04:45:48.6 UTC
Ecliptic Conjunction 1913 September 30 at 04:56:47.2 UTC
Equatorial Conjunction 1913 September 30 at 05:48:14.4 UTC
Last Penumbral External Contact 1913 September 30 at 06:35:28.6 UTC
September 30, 1913 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.82521
Eclipse Obscuration 0.78907
Gamma −1.10053
Sun Right Ascension 12h23m33.6s
Sun Declination -02°32'57.4"
Sun Semi-Diameter 15'58.5"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 12h21m23.5s
Moon Declination -03°31'54.0"
Moon Semi-Diameter 16'42.2"
Moon Equatorial Horizontal Parallax 1°01'18.1"
ΔT 15.6 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. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of August–September 1913
August 31
Descending node (new moon)
September 15
Ascending node (full moon)
September 30
Descending node (new moon)
Partial solar eclipse
Solar Saros 114
Total lunar eclipse
Lunar Saros 126
Partial solar eclipse
Solar Saros 152
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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 152

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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.[7]

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 152

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This eclipse is a part of Saros series 152, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on July 26, 1805. It contains total eclipses from November 2, 1967 through September 14, 2490; hybrid eclipses from September 26, 2508 through October 17, 2544; and annular eclipses from October 29, 2562 through June 16, 2941. The series ends at member 70 as a partial eclipse on August 20, 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 totality will be produced by member 30 at 5 minutes, 16 seconds on June 9, 2328, and the longest duration of annularity will be produced by member 53 at 5 minutes, 20 seconds on February 16, 2743. All eclipses in this series occur at the Moon’s descending node of orbit.[8]

Series members 1–22 occur between 1805 and 2200:
1 2 3

July 26, 1805

August 6, 1823

August 16, 1841
4 5 6

August 28, 1859

September 7, 1877

September 18, 1895
7 8 9

September 30, 1913

October 11, 1931

October 21, 1949
10 11 12

November 2, 1967

November 12, 1985

November 23, 2003
13 14 15

December 4, 2021

December 15, 2039

December 26, 2057
16 17 18

January 6, 2076

January 16, 2094

January 29, 2112
19 20 21

February 8, 2130

February 19, 2148

March 2, 2166
22

March 12, 2184

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 descending node.

22 eclipse events between February 23, 1830 and July 19, 1917
February 22–23 December 11–12 September 29–30 July 18–19 May 6–7
108 110 112 114 116

February 23, 1830

July 18, 1841

May 6, 1845
118 120 122 124 126

February 23, 1849

December 11, 1852

September 29, 1856

July 18, 1860

May 6, 1864
128 130 132 134 136

February 23, 1868

December 12, 1871

September 29, 1875

July 19, 1879

May 6, 1883
138 140 142 144 146

February 22, 1887

December 12, 1890

September 29, 1894

July 18, 1898

May 7, 1902
148 150 152 154

February 23, 1906

December 12, 1909

September 30, 1913

July 19, 1917

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.

Series members between 1801 and 1946

August 5, 1804
(Saros 142)

July 6, 1815
(Saros 143)

June 5, 1826
(Saros 144)

May 4, 1837
(Saros 145)

April 3, 1848
(Saros 146)

March 4, 1859
(Saros 147)

January 31, 1870
(Saros 148)

December 31, 1880
(Saros 149)

December 1, 1891
(Saros 150)

October 31, 1902
(Saros 151)

September 30, 1913
(Saros 152)

August 30, 1924
(Saros 153)

July 30, 1935
(Saros 154)

June 29, 1946
(Saros 155)

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

November 29, 1826
(Saros 149)

November 9, 1855
(Saros 150)

October 19, 1884
(Saros 151)

September 30, 1913
(Saros 152)

September 10, 1942
(Saros 153)

August 20, 1971
(Saros 154)

July 31, 2000
(Saros 155)

July 11, 2029
(Saros 156)

June 21, 2058
(Saros 157)

June 1, 2087
(Saros 158)

April 1, 2174
(Saros 161)

References

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  1. ^ "September 30, 1913 Partial Solar Eclipse". timeanddate. Retrieved 31 July 2024.
  2. ^ "The heavens in September". The Commercial Appeal. Memphis, Tennessee. 1913-08-31. p. 51. Retrieved 2023-11-04 – via Newspapers.com.
  3. ^ "THE HEAVENS IN SEPTEMBER". The Times-Democrat. New Orleans, Louisiana. 1913-08-31. p. 29. Retrieved 2023-11-04 – via Newspapers.com.
  4. ^ "An enterprising hawker". Cambridge Evening News. Cambridge, Cambridgeshire, England. 1913-09-30. p. 3. Retrieved 2023-11-04 – via Newspapers.com.
  5. ^ "ECLIPSE OF THE SUN". Western Mail. Cardiff, South Glamorgan, Wales. 1913-09-30. p. 8. Retrieved 2023-11-04 – via Newspapers.com.
  6. ^ "Partial Solar Eclipse of 1913 Sep 30". EclipseWise.com. Retrieved 31 July 2024.
  7. ^ 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.
  8. ^ "NASA - Catalog of Solar Eclipses of Saros 152". eclipse.gsfc.nasa.gov.
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