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]

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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