Solar eclipse of January 23, 1917

20th-century partial solar eclipse

63°12′N 25°36′E / 63.2°N 25.6°E / 63.2; 25.6Times (UTC)Greatest eclipse7:28:31ReferencesSaros149 (15 of 71)Catalog # (SE5000)9319

A partial solar eclipse occurred at the Moon's ascending node of orbit on Tuesday, January 23, 1917, with a magnitude of 0.7254. 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 partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.

This was the first of four solar eclipses in 1917, with the others occurring on June 19, July 19, and December 14.

Related eclipses

Eclipses in 1917

A total lunar eclipse on January 8, 1917.
A partial solar eclipse on January 23, 1917.
A partial solar eclipse on June 19, 1917.
A total lunar eclipse on July 4, 1917.
A partial solar eclipse on July 19, 1917.
An annular solar eclipse on December 14, 1917.

Metonic

Preceded by: Solar eclipse of April 6, 1913
Followed by: Solar eclipse of November 10, 1920

Tzolkinex

Preceded by: Solar eclipse of December 12, 1909
Followed by: Solar eclipse of March 5, 1924

Half-Saros

Preceded by: Lunar eclipse of January 18, 1908
Followed by: Lunar eclipse of January 28, 1926

Tritos

Preceded by: Solar eclipse of February 23, 1906
Followed by: Solar eclipse of December 24, 1927

Solar Saros 149

Preceded by: Solar eclipse of January 11, 1899
Followed by: Solar eclipse of February 3, 1935

Inex

Preceded by: Solar eclipse of February 11, 1888
Followed by: Solar eclipse of January 3, 1946

Triad

Preceded by: Solar eclipse of March 24, 1830
Followed by: Solar eclipse of November 23, 2003

Solar eclipses of 1913–1917

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 1913 to 1917
Descending node		Ascending node
114	August 31, 1913 Partial	119	February 25, 1914 Annular
124	August 21, 1914 Total	129	February 14, 1915 Annular
134	August 10, 1915 Annular	139	February 3, 1916 Total
144	July 30, 1916 Annular	149	January 23, 1917 Partial
154	July 19, 1917 Partial

Saros 149

Solar saros 149, repeating every about 18 years and 11 days, contains 71 events. The series started with a partial solar eclipse on August 21, 1664. It has total eclipses from April 9, 2043, to October 2, 2331. The series ends at member 71 as a partial eclipse on September 28, 2926. The longest total eclipse will be on July 17, 2205, at 4 minutes and 10 seconds.^[2]

Series members 15–25 occur between 1901 and 2100:
15	16	17
January 23, 1917	February 3, 1935	February 14, 1953
18	19	20
February 25, 1971	March 7, 1989	March 19, 2007
21	22	23
March 29, 2025	April 9, 2043	April 20, 2061
24	25
May 1, 2079	May 11, 2097

References

^ 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.
^ Saros Series Catalog of Solar Eclipses NASA Eclipse Web Site.

External links

Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
- Besselian elements

Solar eclipses

Features

Lists of eclipses

By era	Antiquity Middle Ages Modern era 16th 17th 18th 19th 20th 21st 22nd Future
Saros series (list)	109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162
Visibility	Australia British Isles China Israel Philippines Russia Turkey Ukraine United States
Historical	Mursili's eclipse (1312 BC) Assyrian eclipse (763 BC) Eclipse of Thales (585 BC) Muhammad's eclipse (632 AD)