Solar eclipse of October 23, 1957

A total solar eclipse occurred on Wednesday, October 23, 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. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. This total solar eclipse is non-central because gamma is between 0.9972 and 1.0260.

Solar eclipse of October 23, 1957
Map
Type of eclipse
NatureTotal
Gamma1.0022
Magnitude1.0013
Maximum eclipse
Duration-
Coordinates71.2°S 23.1°W / -71.2; -23.1
Max. width of band- km
Times (UTC)
Greatest eclipse4:54:02
References
Saros123 (50 of 70)
Catalog # (SE5000)9415

Solar eclipses of 1957–1960

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
SarosMapGamma SarosMapGamma
118
1957 April 30
Annular (non-central)		0.99918 123
1957 October 23
Total (non-central)		-1.00218
128
1958 April 19
Annular		0.27499 133
1958 October 12
Total		-0.29506
138
1959 April 08
Annular		-0.45463 143
1959 October 02
Total		0.42075
148
1960 March 27
Partial		-1.15375 153
1960 September 20
Partial		1.20565

Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

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

22 eclipse events between January 5, 1935 and August 11, 2018
January 4-5 October 23-24 August 10-12 May 30-31 March 18-19
111 113 115 117 119

January 5, 1935
August 12, 1942
May 30, 1946
March 18, 1950
121 123 125 127 129

January 5, 1954
October 23, 1957
August 11, 1961
May 30, 1965
March 18, 1969
131 133 135 137 139

January 4, 1973
October 23, 1976
August 10, 1980
May 30, 1984
March 18, 1988
141 143 145 147 149

January 4, 1992
October 24, 1995
August 11, 1999
May 31, 2003
March 19, 2007
151 153 155

January 4, 2011
October 23, 2014
August 11, 2018

Notes
  1. van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.

References
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.