Solar eclipse of October 21, 1930

Last updated
Solar eclipse of October 21, 1930
SE1930Oct21T.png
Map
Type of eclipse
NatureTotal
Gamma -0.3804
Magnitude 1.023
Maximum eclipse
Duration115 sec (1 m 55 s)
Coordinates 30°30′S161°06′W / 30.5°S 161.1°W / -30.5; -161.1
Max. width of band84 km (52 mi)
Times (UTC)
Greatest eclipse21:43:53
References
Saros 142 (18 of 72)
Catalog # (SE5000) 9352

A total solar eclipse occurred on October 21, 1930. 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 total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. Totality was visible from Niuafoʻou in Tonga, Chile, and a tiny part of Santa Cruz Province, Argentina.

Contents

Solar eclipses 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. [1]

Solar eclipse series sets from 1928–1931
Ascending node Descending node
117 May 19, 1928
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Total (non-central)
122 November 12, 1928
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Partial
127 May 9, 1929
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Total
132 November 1, 1929
SE1929Nov01A.png
Annular
137 April 28, 1930
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Hybrid
142 October 21, 1930
SE1930Oct21T.png
Total
147 April 18, 1931
SE1931Apr18P.png
Partial
152 October 11, 1931
SE1931Oct11P.png
Partial

Saros series 142

It is a part of Saros cycle 142, repeating every 18 years, 11 days, containing 72 events. The series started with partial solar eclipse on April 17, 1624. It contains one hybrid eclipse on July 14, 1768, and total eclipses from July 25, 1786 through October 29, 2543. The series ends at member 72 as a partial eclipse on June 5, 2904. The longest duration of totality will be 6 minutes, 34 seconds on May 28, 2291. All eclipses in this series occurs at the Moon’s descending node. [2]

Series members 17–41 occur between 1901 and 2359
171819
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October 10, 1912
SE1930Oct21T.png
October 21, 1930
SE1948Nov01T.png
November 1, 1948
202122
SE1966Nov12T.png
November 12, 1966
SE1984Nov22T.png
November 22, 1984
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December 4, 2002
232425
SE2020Dec14T.png
December 14, 2020
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December 26, 2038
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January 5, 2057
262728
SE2075Jan16T.png
January 16, 2075
SE2093Jan27T.png
January 27, 2093
SE2111Feb08T.png
February 8, 2111
293031
SE2129Feb18T.png
February 18, 2129
SE2147Mar02T.png
March 2, 2147
SE2165Mar12T.png
March 12, 2165
323334
SE2183Mar23T.png
March 23, 2183
SE2201Apr04T.png
April 4, 2201
SE2219Apr15T.png
April 15, 2219
353637
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April 25, 2237
SE2255May07T.png
May 7, 2255
SE2273May17T.png
May 17, 2273
383940
SE2291May28T.png
May 28, 2291
SE2309Jun09T.png
June 9, 2309
SE2327Jun20T.png
June 20, 2327
41
SE2345Jun30T.png
June 30, 2345

Inex series

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.

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.
  2. http://eclipse.gsfc.nasa.gov/SEsaros/SEsaros142.html

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References