Solar eclipse of April 30, 1957

Solar eclipse of April 30, 1957
Solar eclipse of April 30, 1957
	Map
Type of eclipse
Nature	Annular
Gamma	0.9992
Magnitude	0.9799
Maximum eclipse
Duration	-
Coordinates	70°36′N 40°18′E / 70.6°N 40.3°E
Max. width of band	- km
Times (UTC)
Greatest eclipse	0:05:28
References
Saros	118 (65 of 72)
Catalog # (SE5000)	9414

An annular solar eclipse occurred on April 30, 1957. 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 solar eclipse was non-central. Instead, over half of the antumbral shadow fell off into space throughout the eclipse. Gamma had a value of 0.9992. Annularity was visible from northern Soviet Union (today's Russia) and Bear Island, the southernmost island of Svalbard, Norway.

This was the last of 57 umbral eclipses of Solar Saros 118. The 1st was in 947 AD and the 57th was in 1957. The total duration is 1010 years.

While it was an annular solar eclipse, it was a non-central solar eclipse.

Related eclipses[edit]

Solar eclipses of 1957–1960[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]

Solar eclipse series sets from 1957 to 1960
Descending node		Ascending node
Saros	Map	Saros	Map
118	1957 April 30 Annular (non-central)	123	1957 October 23 Total (non-central)
128	1958 April 19 Annular	133	1958 October 12 Total
138	1959 April 8 Annular	143	1959 October 2 Total
148	1960 March 27 Partial	153	1960 September 20 Partial

Saros 118[edit]

It is a part of Saros cycle 118, repeating every 18 years, 11 days, containing 72 events. The series started with partial solar eclipse on May 24, 803 AD. It contains total eclipses from August 19, 947 AD through October 25, 1650, hybrid eclipses on November 4, 1668, and November 15, 1686, and annular eclipses from November 27, 1704, through April 30, 1957. The series ends at member 72 as a partial eclipse on July 15, 2083. The longest duration of total was 6 minutes, 59 seconds on May 16, 1398.

Series members 62–72 occur between 1901 and 2083:
62	63	64
Mar 29, 1903	Apr 8, 1921	Apr 19, 1939
65	66	67
Apr 30, 1957	May 11, 1975	May 21, 1993
68	69	70
Jun 1, 2011	Jun 12, 2029	Jun 23, 2047
71	72
Jul 3, 2065	Jul 15, 2083

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). All eclipses in this table occur at the Moon's descending node.

21 eclipse events, progressing from north to south between July 11, 1953 and July 11, 2029
July 10–12	April 29–30	February 15–16	December 4–5	September 21–23
116	118	120	122	124
July 11, 1953	April 30, 1957	February 15, 1961	December 4, 1964	September 22, 1968
126	128	130	132	134
July 10, 1972	April 29, 1976	February 16, 1980	December 4, 1983	September 23, 1987
136	138	140	142	144
July 11, 1991	April 29, 1995	February 16, 1999	December 4, 2002	September 22, 2006
146	148	150	152	154
July 11, 2010	April 29, 2014	February 15, 2018	December 4, 2021	September 21, 2025
156	158	160	162	164
July 11, 2029