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.
A partial eclipse was visible for parts of Northeast Africa, Europe, West Asia, and Central Asia.
The date of this eclipse was also Lunar New Year, celebrated in many places in Asia, where this eclipse was visible.
Eclipse details Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the Moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.
+January 23, 1917 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 1917 January 23 at 05:43:32.4 UTC Greatest Eclipse 1917 January 23 at 07:28:31.3 UTC Ecliptic Conjunction 1917 January 23 at 07:39:57.6 UTC Equatorial Conjunction 1917 January 23 at 08:08:41.5 UTC Last Penumbral External Contact 1917 January 23 at 09:13:12.8 UTC
+January 23, 1917 Solar Eclipse Parameters Parameter Value Eclipse Magnitude 0.72542 Eclipse Obscuration 0.66080 Gamma 1.15085 Sun Right Ascension 20h20m08.5s Sun Declination -19°33'15.8" Sun Semi-Diameter 16'14.8" Sun Equatorial Horizontal Parallax 08.9" Moon Right Ascension 20h18m33.1s Moon Declination -18°26'25.6" Moon Semi-Diameter 16'44.5" Moon Equatorial Horizontal Parallax 1°01'26.6" ΔT 19.1 s
Eclipse season
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight. The first and last eclipse in this sequence is separated by one synodic month.
+ Eclipse season of December 1916–January 1917 December 24Ascending node (new moon) January 8Descending node (full moon) January 23Ascending node (new moon) Partial solar eclipseSolar Saros 111 Total lunar eclipseLunar Saros 123 Partial solar eclipseSolar Saros 149
Related eclipses Eclipses in 1917 A total lunar eclipse on January 8. A partial solar eclipse on January 23. A partial solar eclipse on June 19. A total lunar eclipse on July 4. A partial solar eclipse on July 19. An annular solar eclipse on December 14. A total lunar eclipse on December 28.
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
Saros 149
Metonic series
Tritos series
Inex series
References
External links