Solar eclipse of September 21, 1903

58°00′S 77°12′E / 58°S 77.2°E / -58; 77.2Max. width of band241 km (150 mi)Times (UTC)Greatest eclipse4:39:52ReferencesSaros123 (47 of 70)Catalog # (SE5000)9289

A total solar eclipse occurred on September 21, 1903.^[1][2][3] 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.

Related eclipses

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.^[4]

Solar eclipse series sets from 1902 to 1907
Descending node			Ascending node
108	April 8, 1902 Partial		113	October 1, 1902
118	March 29, 1903 Annular		123	September 21, 1903 Total
128	March 17, 1904 Annular		133	September 9, 1904 Total
138	March 6, 1905 Annular		143	August 30, 1905 Total
148	February 23, 1906 Partial		153	August 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

Inex series members between 1901 and 2100:
September 21, 1903 (Saros 123)	August 31, 1932 (Saros 124)	August 11, 1961 (Saros 125)
July 22, 1990 (Saros 126)	July 2, 2019 (Saros 127)	June 11, 2048 (Saros 128)
May 22, 2077 (Saros 129)

In the 22nd century:

• Solar Saros 130: Total Solar Eclipse of 2106 May 3
• 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.

Series members between 1901 and 2100
September 21, 1903 (Saros 123)	August 21, 1914 (Saros 124)	July 20, 1925 (Saros 125)
June 19, 1936 (Saros 126)	May 20, 1947 (Saros 127)	April 19, 1958 (Saros 128)
March 18, 1969 (Saros 129)	February 16, 1980 (Saros 130)	January 15, 1991 (Saros 131)
December 14, 2001 (Saros 132)	November 13, 2012 (Saros 133)	October 14, 2023 (Saros 134)
September 12, 2034 (Saros 135)	August 12, 2045 (Saros 136)	July 12, 2056 (Saros 137)
June 11, 2067 (Saros 138)	May 11, 2078 (Saros 139)	April 10, 2089 (Saros 140)
March 10, 2100 (Saros 141)

Notes

References

• Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
  • Google interactive map
  • Besselian elements