Solar eclipse of July 21, 1906

Solar eclipse of July 21, 1906
Solar eclipse of July 21, 1906
	Map
Type of eclipse
Nature	Partial
Gamma	−1.3637
Magnitude	0.3355
Maximum eclipse
Coordinates	68°36′S 33°18′W / 68.6°S 33.3°W
Times (UTC)
Greatest eclipse	13:14:19
References
Saros	115 (70 of 72)
Catalog # (SE5000)	9296

A partial solar eclipse occurred at the Moon's ascending node of orbit on Saturday, July 21, 1906,^[1] with a magnitude of 0.3355. 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.

Related eclipses[edit]

Solar eclipses of 1906–1909[edit]

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.^[2]

The partial solar eclipses on February 23, 1906 and August 20, 1906 occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1906 to 1909
Ascending node			Descending node
Saros	Map	Gamma	Saros	Map	Gamma
115	July 21, 1906 Partial	−1.3637	120	January 14, 1907 Total	0.8628
125	July 10, 1907 Annular	−0.6313	130	January 3, 1908 Total	0.1934
135	June 28, 1908 Annular	0.1389	140	December 23, 1908 Hybrid	−0.4985
145	June 17, 1909 Hybrid	0.8957	150	December 12, 1909 Partial	−1.2456

Saros 115[edit]

This eclipse is a part of Saros series 115, repeating every 18 years, 11 days, and containing 72 events. The series started with a partial solar eclipse on June 21, 662 AD. It contains total eclipses from October 7, 842 AD through November 2, 1491; hybrid eclipses from November 12, 1509 through December 15, 1563; and annular eclipses from December 25, 1581 through May 27, 1816. The series ends at member 72 as a partial eclipse on August 12, 1942. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.

The longest duration of totality was produced by member 36 at 6 minutes, 24 seconds on July 5, 1293, and the longest duration of annularity was produced by member 65 at 1 minutes, 54 seconds on May 27, 1816. All eclipses in this series occur at the Moon’s ascending node of orbit.^[3]

Series members 65–72 occur between 1801 and 1942:
65	66	67
May 27, 1816	June 7, 1834	June 17, 1852
68	69	70
June 28, 1870	July 9, 1888	July 21, 1906
71	72
July 31, 1924	August 12, 1942

Metonic series[edit]

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