Wikipedia

Solar eclipse of March 27, 1941

An annular solar eclipse occurred at the Moon's descending node of orbit on Thursday, March 27, 1941,[1] with a magnitude of 0.9355. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 2.6 days before apogee (on March 30, 1941, at 10:50 UTC), the Moon's apparent diameter was smaller.[2]

Solar eclipse of March 27, 1941
Map
Type of eclipse
NatureAnnular
Gamma−0.5025
Magnitude0.9355
Maximum eclipse
Duration461 s (7 min 41 s)
Coordinates26°12′S 110°54′W / 26.2°S 110.9°W / -26.2; -110.9
Max. width of band276 km (171 mi)
Times (UTC)
Greatest eclipse20:08:08
References
Saros138 (27 of 70)
Catalog # (SE5000)9377

Annularity was visible from Peru, Bolivia and Brazil. A partial eclipse was visible for parts of Oceania, Central America, the Caribbean, western South America, 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.[3]

March 27, 1941 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1941 March 27 at 17:12:43.8 UTC
First Umbral External Contact 1941 March 27 at 18:23:09.9 UTC
First Central Line 1941 March 27 at 18:26:16.2 UTC
First Umbral Internal Contact 1941 March 27 at 18:29:24.0 UTC
Equatorial Conjunction 1941 March 27 at 19:49:22.3 UTC
Greatest Eclipse 1941 March 27 at 20:08:07.8 UTC
Greatest Duration 1941 March 27 at 20:11:10.7 UTC
Ecliptic Conjunction 1941 March 27 at 20:14:07.0 UTC
Last Umbral Internal Contact 1941 March 27 at 21:47:04.6 UTC
Last Central Line 1941 March 27 at 21:50:13.5 UTC
Last Umbral External Contact 1941 March 27 at 21:53:20.9 UTC
Last Penumbral External Contact 1941 March 27 at 23:03:43.6 UTC
March 27, 1941 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.93546
Eclipse Obscuration 0.87508
Gamma −0.50251
Sun Right Ascension 00h24m50.5s
Sun Declination +02°41'09.8"
Sun Semi-Diameter 16'01.3"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 00h25m23.4s
Moon Declination +02°15'13.1"
Moon Semi-Diameter 14'47.6"
Moon Equatorial Horizontal Parallax 0°54'17.7"
ΔT 24.9 s

Eclipse season

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See also: Eclipse cycle

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 1941
March 13
Ascending node (full moon)		 March 27
Descending node (new moon)
   
Partial lunar eclipse
Lunar Saros 112		 Annular solar eclipse
Solar Saros 138
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Eclipses in 1941

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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 138

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Inex

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Triad

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Solar eclipses of 1939–1942

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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.[4]

The partial solar eclipse on August 12, 1942 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 1939 to 1942
Descending node   Ascending node
Saros Map Gamma Saros Map Gamma
118 April 19, 1939
 
Annular 		0.9388 123 October 12, 1939
 
Total 		−0.9737
128 April 7, 1940
 
Annular 		0.219 133 October 1, 1940
 
Total 		−0.2573
138 March 27, 1941
 
Annular 		−0.5025 143 September 21, 1941
 
Total 		0.4649
148 March 16, 1942
 
Partial 		−1.1908 153 September 10, 1942
 
Partial 		1.2571

Saros 138

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This eclipse is a part of Saros series 138, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on June 6, 1472. It contains annular eclipses from August 31, 1598 through February 18, 2482; a hybrid eclipse on March 1, 2500; and total eclipses from March 12, 2518 through April 3, 2554. The series ends at member 70 as a partial eclipse on July 11, 2716. 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 23 at 8 minutes, 2 seconds on February 11, 1869, and the longest duration of totality will be produced by member 61 at 56 seconds on April 3, 2554. All eclipses in this series occur at the Moon’s descending node of orbit.[5]

Series members 20–41 occur between 1801 and 2200:
20 21 22
 
January 10, 1815 		 
January 20, 1833 		 
February 1, 1851
23 24 25
 
February 11, 1869 		 
February 22, 1887 		 
March 6, 1905
26 27 28
 
March 17, 1923 		 
March 27, 1941 		 
April 8, 1959
29 30 31
 
April 18, 1977 		 
April 29, 1995 		 
May 10, 2013
32 33 34
 
May 21, 2031 		 
May 31, 2049 		 
June 11, 2067
35 36 37
 
June 22, 2085 		 
July 4, 2103 		 
July 14, 2121
38 39 40
 
July 25, 2139 		 
August 5, 2157 		 
August 16, 2175
41
 
August 26, 2193

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 March 27, 1884 and August 20, 1971
March 27–29 January 14 November 1–2 August 20–21 June 8
108 110 112 114 116
 
March 27, 1884 		 
August 20, 1895 		 
June 8, 1899
118 120 122 124 126
 
March 29, 1903 		 
January 14, 1907 		 
November 2, 1910 		 
August 21, 1914 		 
June 8, 1918
128 130 132 134 136
 
March 28, 1922 		 
January 14, 1926 		 
November 1, 1929 		 
August 21, 1933 		 
June 8, 1937
138 140 142 144 146
 
March 27, 1941 		 
January 14, 1945 		 
November 1, 1948 		 
August 20, 1952 		 
June 8, 1956
148 150 152 154
 
March 27, 1960 		 
January 14, 1964 		 
November 2, 1967 		 
August 20, 1971

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 2200
 
April 4, 1810
(Saros 126) 		 
March 4, 1821
(Saros 127) 		 
February 1, 1832
(Saros 128) 		 
December 31, 1842
(Saros 129) 		 
November 30, 1853
(Saros 130)
 
October 30, 1864
(Saros 131) 		 
September 29, 1875
(Saros 132) 		 
August 29, 1886
(Saros 133) 		 
July 29, 1897
(Saros 134) 		 
June 28, 1908
(Saros 135)
 
May 29, 1919
(Saros 136) 		 
April 28, 1930
(Saros 137) 		 
March 27, 1941
(Saros 138) 		 
February 25, 1952
(Saros 139) 		 
January 25, 1963
(Saros 140)
 
December 24, 1973
(Saros 141) 		 
November 22, 1984
(Saros 142) 		 
October 24, 1995
(Saros 143) 		 
September 22, 2006
(Saros 144) 		 
August 21, 2017
(Saros 145)
 
July 22, 2028
(Saros 146) 		 
June 21, 2039
(Saros 147) 		 
May 20, 2050
(Saros 148) 		 
April 20, 2061
(Saros 149) 		 
March 19, 2072
(Saros 150)
 
February 16, 2083
(Saros 151) 		 
January 16, 2094
(Saros 152) 		 
December 17, 2104
(Saros 153) 		 
November 16, 2115
(Saros 154) 		 
October 16, 2126
(Saros 155)
 
September 15, 2137
(Saros 156) 		 
August 14, 2148
(Saros 157) 		 
July 15, 2159
(Saros 158) 		 
June 14, 2170
(Saros 159) 		 
May 13, 2181
(Saros 160)
 
April 12, 2192
(Saros 161)

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 16, 1825
(Saros 134) 		 
May 26, 1854
(Saros 135) 		 
May 6, 1883
(Saros 136)
 
April 17, 1912
(Saros 137) 		 
March 27, 1941
(Saros 138) 		 
March 7, 1970
(Saros 139)
 
February 16, 1999
(Saros 140) 		 
January 26, 2028
(Saros 141) 		 
January 5, 2057
(Saros 142)
 
December 16, 2085
(Saros 143) 		 
November 27, 2114
(Saros 144) 		 
November 7, 2143
(Saros 145)
 
October 17, 2172
(Saros 146)

Notes

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  1. ^ "March 27, 1941 Annular Solar Eclipse". timeanddate. Retrieved 4 August 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 4 August 2024.
  3. ^ "Annular Solar Eclipse of 1941 Mar 27". EclipseWise.com. Retrieved 4 August 2024.
  4. ^ 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.
  5. ^ "NASA - Catalog of Solar Eclipses of Saros 138". eclipse.gsfc.nasa.gov.

References

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