Solar eclipse of October 11, 1931

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Template:Short description Script error: No such module "Solar eclipse". A partial solar eclipse occurred at the Moon's descending node of orbit on Sunday, October 11, 1931,[1] with a magnitude of 0.9005. 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 and central South America and Antarctica.

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]

October 11, 1931 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1931 October 11 at 11:01:29.3 UTC
Greatest Eclipse 1931 October 11 at 12:55:39.8 UTC
Ecliptic Conjunction 1931 October 11 at 13:06:15.3 UTC
Equatorial Conjunction 1931 October 11 at 13:53:48.2 UTC
Last Penumbral External Contact 1931 October 11 at 14:49:27.7 UTC
October 11, 1931 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.90054
Eclipse Obscuration 0.88440
Gamma −1.06069
Sun Right Ascension 13h03m34.8s
Sun Declination -06°46'31.5"
Sun Semi-Diameter 16'01.4"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 13h01m31.6s
Moon Declination -07°43'48.4"
Moon Semi-Diameter 16'43.0"
Moon Equatorial Horizontal Parallax 1°01'21.2"
ΔT 23.9 s

Eclipse season

Script error: No such module "Labelled list hatnote". 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 September–October 1931
September 12
Descending node (new moon)		 September 26
Ascending node (full moon)		 October 11
Descending node (new moon)
File:SE1931Sep12P.png File:Lunar eclipse chart close-1931Sep26.png File:SE1931Oct11P.png
Partial solar eclipse
Solar Saros 114		 Total lunar eclipse
Lunar Saros 126		 Partial solar eclipse
Solar Saros 152

Related eclipses

Eclipses in 1931

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 152

Inex

Triad

Solar eclipses of 1928–1931

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 eclipse on June 17, 1928 occurs in the previous lunar year eclipse set, and the partial solar eclipse on September 12, 1931 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 1928 to 1931
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
117 May 19, 1928
File:SE1928May19T.png
Total (non-central) 		1.0048 122 November 12, 1928
File:SE1928Nov12P.png
Partial 		1.0861
127 May 9, 1929
File:SE1929May09T.png
Total 		−0.2887 132 November 1, 1929
File:SE1929Nov01A.png
Annular 		0.3514
137 April 28, 1930
File:SE1930Apr28H.png
Hybrid 		0.473 142 October 21, 1930
File:SE1930Oct21T.png
Total 		−0.3804
147 April 18, 1931
File:SE1931Apr18P.png
Partial 		1.2643 152 October 11, 1931
File:SE1931Oct11P.png
Partial 		−1.0607

Saros 152

Template:Solar Saros series 152

Metonic series

Template:Solar Metonic series 1848–1935

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 1801 and 1964
File:SE1811Sep17A.gif
September 17, 1811
(Saros 141) 		File:SE1822Aug16T.gif
August 16, 1822
(Saros 142) 		File:SE1833Jul17T.gif
July 17, 1833
(Saros 143) 		File:SE1844Jun16P.gif
June 16, 1844
(Saros 144) 		File:SE1855May16P.gif
May 16, 1855
(Saros 145)
File:SE1866Apr15P.gif
April 15, 1866
(Saros 146) 		File:SE1877Mar15P.gif
March 15, 1877
(Saros 147) 		File:SE1888Feb11P.gif
February 11, 1888
(Saros 148) 		File:SE1899Jan11P.gif
January 11, 1899
(Saros 149) 		File:SE1909Dec12P.png
December 12, 1909
(Saros 150)
File:SE1920Nov10P.png
November 10, 1920
(Saros 151) 		File:SE1931Oct11P.png
October 11, 1931
(Saros 152) 		File:SE1942Sep10P.png
September 10, 1942
(Saros 153) 		File:SE1953Aug09P.png
August 9, 1953
(Saros 154) 		File:SE1964Jul09P.png
July 9, 1964
(Saros 155)

Inex series

Template:Solar Inex series 2018 August 11

Notes

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  1. ↑ Script error: No such module "citation/CS1".
  2. ↑ Script error: No such module "citation/CS1".
  3. ↑ Script error: No such module "citation/CS1".

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References


External links

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