Solar eclipse of December 4, 1964

Solar eclipse of December 4, 1964
Solar eclipse of December 4, 1964
	Map
Type of eclipse
Nature	Partial
Gamma	1.1193
Magnitude	0.7518
Maximum eclipse
Coordinates	64°18′N 173°18′W / 64.3°N 173.3°W
Times (UTC)
Greatest eclipse	1:31:54
References
Saros	122 (55 of 70)
Catalog # (SE5000)	9431

A partial solar eclipse occurred at the Moon's descending node of orbit on Friday, December 4, 1964, with a magnitude of 0.7518. 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 last of four partial solar eclipses in 1964, with the others occurring on January 14, June 10, and July 9.

Related eclipses[edit]

Solar eclipses of 1964–1967[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.^[1]

The partial solar eclipses on January 14, 1964 and July 9, 1964 occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1964 to 1967
Ascending node			Descending node
Saros	Map	Gamma	Saros	Map	Gamma
117	June 10, 1964 Partial	−1.1393	122	December 4, 1964 Partial	1.1193
127	May 30, 1965 Total	−0.4225	132	November 23, 1965 Annular	0.3906
137	May 20, 1966 Annular	0.3467	142	November 12, 1966 Total	−0.33
147	May 9, 1967 Partial	1.1422	152	November 2, 1967 Total (non-central)	1.0007

Saros 122[edit]

This eclipse is a part of Saros series 122, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on April 17, 991 AD. It contains total eclipses from July 12, 1135 through August 3, 1171; hybrid eclipses on August 13, 1189 and August 25, 1207; and annular eclipses from September 4, 1225 through October 10, 1874. The series ends at member 70 as a partial eclipse on May 17, 2235. 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 9 at 1 minutes, 25 seconds on July 12, 1135, and the longest duration of annularity was produced by member 50 at 6 minutes, 28 seconds on October 10, 1874. All eclipses in this series occur at the Moon’s descending node of orbit.^[2]

Series members 46–68 occur between 1801 and 2200:
46	47	48
August 28, 1802	September 7, 1820	September 18, 1838
49	50	51
September 29, 1856	October 10, 1874	October 20, 1892
52	53	54
November 2, 1910	November 12, 1928	November 23, 1946
55	56	57
December 4, 1964	December 15, 1982	December 25, 2000
58	59	60
January 6, 2019	January 16, 2037	January 27, 2055
61	62	63
February 7, 2073	February 18, 2091	March 1, 2109
64	65	66
March 13, 2127	March 23, 2145	April 3, 2163
67	68
April 14, 2181	April 25, 2199