Solar eclipse of September 21, 1903

A total solar eclipse occurred on September 21, 1903. 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.

Solar eclipse of September 21, 1903
Map
Type of eclipse
NatureTotal
Gamma−0.8967
Magnitude1.0316
Maximum eclipse
Duration132 sec (2 m 12 s)
Coordinates58°S 77.2°E / -58; 77.2
Max. width of band241 km (150 mi)
Times (UTC)
Greatest eclipse4:39:52
References
Saros123 (47 of 70)
Catalog # (SE5000)9289

Solar eclipses 1902–1907

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 1902–1907
Descending node   Ascending node
108April 8, 1902

Partial		 113October 1, 1902
118March 29, 1903

Annular		 123September 21, 1903

Total
128March 17, 1904

Annular		 133September 9, 1904

Total
138March 6, 1905

Annular		 143August 30, 1905

Total
148February 23, 1906

Partial		 153August 20, 1906

Partial

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.

In the 19th century:

  • Solar Saros 120: Total Solar Eclipse of 1816 Nov 19
  • Solar Saros 121: Hybrid Solar Eclipse of 1845 Oct 30
  • Solar Saros 122: Annular Solar Eclipse of 1874 Oct 10

In the 22nd century:

  • Solar Saros 130: Total Solar Eclipse of 2106 May 03
  • Solar Saros 131: Annular Solar Eclipse of 2135 Apr 13
  • Solar Saros 132: Hybrid Solar Eclipse of 2164 Mar 23
  • Solar Saros 133: Total Solar Eclipse of 2193 Mar 03

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.

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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