Solar eclipse of September 21, 1922
Map
Type of eclipse
NatureTotal
Gamma−0.213
Magnitude1.0678
Maximum eclipse
Duration359 sec (5 m 59 s)
Coordinates10°42′S 104°30′E / 10.7°S 104.5°E / -10.7; 104.5
Max. width of band226 km (140 mi)
Times (UTC)
Greatest eclipse4:40:31
References
Saros133 (40 of 72)
Catalog # (SE5000)9333

A total solar eclipse occurred on September 21, 1922. 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. The greatest eclipse occurred exactly at perigee.

Totality started in Ethiopia, Italian Somaliland (today's Somalia), and passed British Maldives and Christmas Island in the Straits Settlements (now in Australia) in the Indian Ocean, and Australia. Two large scientific expeditions investigated Einstein's theory of relativity.[1]

Solar eclipses 1921–1924

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.[2]

Solar eclipse series sets from 1921–1924
Descending node   Ascending node
118April 8, 1921

Annular		 123October 1, 1921

Total
128March 28, 1922

Annular		 133September 21, 1922

Total
138March 17, 1923

Annular		 143September 10, 1923

Total
148March 5, 1924

Partial		 153August 30, 1924

Partial

Saros 133

Solar Saros 133, repeating every 18 years, 11 days, contains 72 events. The series started with a partial solar eclipse on July 13, 1219. It contains annular eclipses from November 20, 1435, through January 13, 1526, with a hybrid eclipse on January 24, 1544. It has total eclipses from February 3, 1562, through June 21, 2373. The series ends at member 72 as a partial eclipse on September 5, 2499. The longest duration of totality was 6 minutes, 49.97 seconds on August 7, 1850.[3] The total eclipses of this saros series are getting shorter and farther south with each iteration. All eclipses in this series occurs at the Moon’s ascending node.

Series members 30–56 occur between 1742 and 2211
30 31 32
June 3, 1742 June 13, 1760
June 24, 1778
33 34 35
July 4, 1796 July 17, 1814 July 27, 1832
36 37 38
August 7, 1850
August 18, 1868
August 29, 1886
39 40 41

September 9, 1904
September 21, 1922
October 1, 1940
42 43 44

October 12, 1958
October 23, 1976
November 3, 1994
45 46 47

November 13, 2012
November 25, 2030
December 5, 2048
48 49 50

December 17, 2066
December 27, 2084
January 8, 2103
51 52 53

January 19, 2121
January 30, 2139
February 9, 2157
54 55 56

February 21, 2175
March 3, 2193
March 15, 2211

References

  1. ↑ "1922 Solar Eclipse in Australia Testing Einstein's Theory". Retrieved 4 June 2011.
  2. ↑ 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.
  3. ↑ http://eclipse.gsfc.nasa.gov/SEsaros/SEsaros133.html
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