Solar eclipse of September 11, 1969

Last updated
Solar eclipse of September 11, 1969
SE1969Sep11A.png
Map
Type of eclipse
NatureAnnular
Gamma 0.2201
Magnitude 0.969
Maximum eclipse
Duration191 s (3 min 11 s)
Coordinates 15°36′N114°06′W / 15.6°N 114.1°W / 15.6; -114.1
Max. width of band114 km (71 mi)
Times (UTC)
Greatest eclipse19:58:59
References
Saros 134 (41 of 71)
Catalog # (SE5000) 9441

An annular solar eclipse occurred on September 11, 1969.

Contents

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. Annularity was visible from the Pacific Ocean, Peru, Bolivia and the southwestern tip of Brazilian state Mato Grosso. Places west of the International Date Line witnessed the eclipse on Friday, September 12, 1969.

Solar eclipses of 1968–1971

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 1968 to 1971
Ascending node Descending node
SarosMapGammaSarosMapGamma
119 SE1968Mar28P.png
1968 March 28
Partial
−1.03704124 SE1968Sep22T.png
1968 September 22
Total
0.94507
129 SE1969Mar18A.png
1969 March 18
Annular
−0.27037134 SE1969Sep11A.png
1969 September 11
Annular
0.22014
139 SE1970Mar07T.png
1970 March 7
Total
0.44728144 SE1970Aug31A.png
1970 August 31
Annular
−0.53640
149 SE1971Feb25P.png
1971 February 25
Partial
1.11876154 SE1971Aug20P.png
1971 August 20
Partial
−1.26591
A partial solar eclipse of July 22, 1971 occurs in the next lunar year set.

Saros 134

It is a part of Saros cycle 134, repeating every 18 years, 11 days, containing 71 events. The series started with a partial solar eclipse on June 22, 1248. It contains total eclipses from October 9, 1428 through December 24, 1554 and hybrid eclipses from January 3, 1573 through June 27, 1843, and annular eclipses from July 8, 1861 through May 21, 2384. The series ends at member 71 as a partial eclipse on August 6, 2510. The longest duration of totality was 1 minutes, 30 seconds on October 9, 1428. All eclipses in this series occur at the Moon’s descending node. [2]

Series members 32–48 occur between 1801 and 2100:
323334
SE1807Jun06H.png
June 6, 1807
SE1825Jun16H.png
June 16, 1825
SE1843Jun27H.png
June 27, 1843
353637
SE1861Jul08A.png
July 8, 1861
SE1879Jul19A.png
July 19, 1879
SE1897Jul29A.png
July 29, 1897
383940
SE1915Aug10A.png
August 10, 1915
SE1933Aug21A.png
August 21, 1933
SE1951Sep01A.png
September 1, 1951
414243
SE1969Sep11A.png
September 11, 1969
SE1987Sep23A.png
September 23, 1987
SE2005Oct03A.png
October 3, 2005
444546
SE2023Oct14A.png
October 14, 2023
SE2041Oct25A.png
October 25, 2041
SE2059Nov05A.png
November 5, 2059
4748
SE2077Nov15A.png
November 15, 2077
SE2095Nov27A.png
November 27, 2095

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.

Series members between 1801 and 2100
SE1805Dec21A.gif
December 21, 1805
(Saros 119)
SE1816Nov19T.gif
November 19, 1816
(Saros 120)
SE1827Oct20H.gif
October 20, 1827
(Saros 121)
SE1838Sep18A.gif
September 18, 1838
(Saros 122)
SE1849Aug18T.gif
August 18, 1849
(Saros 123)
SE1860Jul18T.gif
July 18, 1860
(Saros 124)
SE1871Jun18A.gif
June 18, 1871
(Saros 125)
SE1882May17T.png
May 17, 1882
(Saros 126)
SE1893Apr16T.png
April 16, 1893
(Saros 127)
SE1904Mar17A.png
March 17, 1904
(Saros 128)
SE1915Feb14A.png
February 14, 1915
(Saros 129)
SE1926Jan14T.png
January 14, 1926
(Saros 130)
SE1936Dec13A.png
December 13, 1936
(Saros 131)
SE1947Nov12A.png
November 12, 1947
(Saros 132)
SE1958Oct12T.png
October 12, 1958
(Saros 133)
SE1969Sep11A.png
September 11, 1969
(Saros 134)
SE1980Aug10A.png
August 10, 1980
(Saros 135)
SE1991Jul11T.png
July 11, 1991
(Saros 136)
SE2002Jun10A.png
June 10, 2002
(Saros 137)
SE2013May10A.png
May 10, 2013
(Saros 138)
SE2024Apr08T.png
April 8, 2024
(Saros 139)
SE2035Mar09A.png
March 9, 2035
(Saros 140)
SE2046Feb05A.png
February 5, 2046
(Saros 141)
SE2057Jan05T.png
January 5, 2057
(Saros 142)
SE2067Dec06H.png
December 6, 2067
(Saros 143)
SE2078Nov04A.png
November 4, 2078
(Saros 144)
SE2089Oct04T.png
October 4, 2089
(Saros 145)
SE2100Sep04T.png
September 4, 2100
(Saros 146)

In the 22nd century:

In the 23rd century:

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 descending node.

22 eclipse events between September 12, 1931 and July 1, 2011.
September 11-12June 30-July 1April 17-19February 4-5November 22-23
114116118120122
SE1931Sep12P.png
September 12, 1931
SE1935Jun30P.png
June 30, 1935
SE1939Apr19A.png
April 19, 1939
SE1943Feb04T.png
February 4, 1943
SE1946Nov23P.png
November 23, 1946
124126128130132
SE1950Sep12T.png
September 12, 1950
SE1954Jun30T.png
June 30, 1954
SE1958Apr19A.png
April 19, 1958
SE1962Feb05T.png
February 5, 1962
SE1965Nov23A.png
November 23, 1965
134136138140142
SE1969Sep11A.png
September 11, 1969
SE1973Jun30T.png
June 30, 1973
SE1977Apr18A.png
April 18, 1977
SE1981Feb04A.png
February 4, 1981
SE1984Nov22T.png
November 22, 1984
144146148150152
SE1988Sep11A.png
September 11, 1988
SE1992Jun30T.png
June 30, 1992
SE1996Apr17P.png
April 17, 1996
SE2000Feb05P.png
February 5, 2000
SE2003Nov23T.png
November 23, 2003
154156
SE2007Sep11P.png
September 11, 2007
SE2011Jul01P.png
July 1, 2011

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.
  2. "NASA - Catalog of Solar Eclipses of Saros 134". eclipse.gsfc.nasa.gov.

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References