Solar eclipse of December 14, 1917 | |
---|---|
Type of eclipse | |
Nature | Annular |
Gamma | −0.9157 |
Magnitude | 0.9791 |
Maximum eclipse | |
Duration | 77 sec (1 m 17 s) |
Coordinates | 88°00′S124°48′E / 88°S 124.8°E |
Max. width of band | 189 km (117 mi) |
Times (UTC) | |
Greatest eclipse | 9:27:20 |
References | |
Saros | 121 (55 of 71) |
Catalog # (SE5000) | 9323 |
An annular solar eclipse occurred on Friday, December 14, 1917. 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 annular eclipse is notable in that the path of annularity passed over the South Pole.
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 1916–1920 | ||||
---|---|---|---|---|
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 |
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 |
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 |
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