Solar eclipse of September 21, 1922

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.

Solar eclipse of September 21, 1922
SE1922Sep21T.png
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

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]

Related eclipsesEdit

Solar eclipses 1921–1924Edit

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
118 April 8, 1921
 
Annular
123 October 1, 1921
 
Total
128 March 28, 1922
 
Annular
133 September 21, 1922
 
Total
138 March 17, 1923
 
Annular
143 September 10, 1923
 
Total
148 March 5, 1924
 
Partial
153 August 30, 1924
 
Partial

Saros 133Edit

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

ReferencesEdit

  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

External linksEdit