Solar eclipse of April 19, 1939

An annular solar eclipse occurred on Wednesday, April 19, 1939. 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.

Solar eclipse of April 19, 1939
Map
Type of eclipse
NatureAnnular
Gamma0.9388
Magnitude0.9731
Maximum eclipse
Duration109 sec (1 m 49 s)
Coordinates73.1°N 129.1°W / 73.1; -129.1
Max. width of band285 km (177 mi)
Times (UTC)
Greatest eclipse16:45:53
References
Saros118 (64 of 72)
Catalog # (SE5000)9373

This annular eclipse is notable in that the path of annularity passed over the North Pole. Land covered in the path include part of Alaska, Canada, and Franz Josef Land, Ushakov Island and Vize Island in the Soviet Union (today's Russia). This was the umbral eclipse number 56 out of 57 of Solar Saros 118, this is the last central solar eclipse, and the penultimate umbral eclipse, with last (ultimate) in 1957.

Solar eclipses 1939–1942

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.[1]

Solar eclipse series sets from 1939–1942
Descending node   Ascending node
SarosMap SarosMap
118April 19, 1939

Annular		 123October 12, 1939

Total
128April 7, 1940

Annular		 133October 1, 1940

Total
138March 27, 1941

Annular		 143September 21, 1941

Total
148March 16, 1942

Partial		 153September 10, 1942

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

Saros 118

It is a part of Saros cycle 118, repeating every 18 years, 11 days, containing 72 events. The series started with partial solar eclipse on May 24, 803 AD. It contains total eclipses from August 19, 947 AD through October 25, 1650, hybrid eclipses on November 4, 1668, and November 15, 1686, and annular eclipses from November 27, 1704, through April 30, 1957. The series ends at member 72 as a partial eclipse on July 15, 2083. The longest duration of total was 6 minutes, 59 seconds on May 16, 1398.

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 September 12, 1931 and July 1, 2011.
September 11-12 June 30-July 1 April 17-19 February 4-5 November 22-23
114 116 118 120 122

September 12, 1931
June 30, 1935
April 19, 1939
February 4, 1943
November 23, 1946
124 126 128 130 132

September 12, 1950
June 30, 1954
April 19, 1958
February 5, 1962
November 23, 1965
134 136 138 140 142

September 11, 1969
June 30, 1973
April 18, 1977
February 4, 1981
November 22, 1984
144 146 148 150 152

September 11, 1988
June 30, 1992
April 17, 1996
February 5, 2000
November 23, 2003
154 156

September 11, 2007
July 1, 2011

Notes
  1. 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.

References
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