Solar eclipse of December 14, 1917
An annular solar eclipse occurred at the Moon's ascending node of orbit on Friday, December 14, 1917, with a magnitude of 0.9791. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide.
This was the last of four solar eclipses in 1917, with the others occurring on January 23, June 19 and July 19.
This annular eclipse is notable in that the path of annularity passed over the South Pole.
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 February 25, 1914
- Followed by: Solar eclipse of October 1, 1921
Tzolkinex
- Preceded by: Solar eclipse of November 2, 1910
- Followed by: Solar eclipse of January 24, 1925
Half-Saros
- Preceded by: Lunar eclipse of December 7, 1908
- Followed by: Lunar eclipse of December 19, 1926
Tritos
- Preceded by: Solar eclipse of January 14, 1907
- Followed by: Solar eclipse of November 12, 1928
Solar Saros 121
- Preceded by: Solar eclipse of December 3, 1899
- Followed by: Solar eclipse of December 25, 1935
Inex
- Preceded by: Solar eclipse of January 1, 1889
- Followed by: Solar eclipse of November 23, 1946
Triad
- Preceded by: Solar eclipse of February 12, 1831
- Followed by: Solar eclipse of October 14, 2004
Solar eclipses of 1916–1920
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 1916 to 1920 | ||||
---|---|---|---|---|
Ascending node | Descending node | |||
111 | December 24, 1916 Partial | 116 | June 19, 1917 Partial | |
121 | December 14, 1917 Annular | 126 | June 8, 1918 Total | |
131 | December 3, 1918 Annular | 136 | May 29, 1919 Total | |
141 | November 22, 1919 Annular | 146 | May 18, 1920 Partial | |
151 | November 10, 1920 Partial |
Saros 121
Solar saros 121, repeating every about 18 years, 11 days, and 8 hours, contains 71 events. The series started with a partial solar eclipse on April 25, 944. It contains total eclipses from July 10, 1070, to October 9, 1809. It contains hybrid eclipses on October 20, 1827, and October 30, 1845. It contains annular eclipses from November 11, 1863, to February 28, 2044. The series ends at member 71 as a partial eclipse on June 7, 2206. The longest total eclipse occurred on June 21, 1629, with greatest duration of totality at 6 minutes and 20 seconds. The longest annular eclipse will occur on February 28, 2044, with greatest duration of annularity at 2 minutes and 27 seconds.[2]
Series members 49–65 occur between 1801 and 2100: | ||
---|---|---|
49 | 50 | 51 |
October 9, 1809 | October 20, 1827 | October 30, 1845 |
52 | 53 | 54 |
November 11, 1863 | November 21, 1881 | December 3, 1899 |
55 | 56 | 57 |
December 14, 1917 | December 25, 1935 | January 5, 1954 |
58 | 59 | 60 |
January 16, 1972 | January 26, 1990 | February 7, 2008 |
61 | 62 | 63 |
February 17, 2026 | February 28, 2044 | March 11, 2062 |
64 | 65 | |
March 21, 2080 | April 1, 2098 |
Metonic series
The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days).
22 eclipse events between December 13, 1898 and July 20, 1982 | ||||
---|---|---|---|---|
December 13–14 | October 1–2 | July 20–21 | May 9 | February 24–25 |
111 | 113 | 115 | 117 | 119 |
December 13, 1898 | July 21, 1906 | May 9, 1910 | February 25, 1914 | |
121 | 123 | 125 | 127 | 129 |
December 14, 1917 | October 1, 1921 | July 20, 1925 | May 9, 1929 | February 24, 1933 |
131 | 133 | 135 | 137 | 139 |
December 13, 1936 | October 1, 1940 | July 20, 1944 | May 9, 1948 | February 25, 1952 |
141 | 143 | 145 | 147 | 149 |
December 14, 1955 | October 2, 1959 | July 20, 1963 | May 9, 1967 | February 25, 1971 |
151 | 153 | 155 | ||
December 13, 1974 | October 2, 1978 | July 20, 1982 |
Notes
References
- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
- Google interactive map
- Besselian elements
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By era | |
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- 2186
Annular eclipses
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- 1820
- 1854
- 1879
- 1889
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Partial eclipses
→ next partial
- Jan. 1639
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