Solar eclipse of September 11, 1969 | |
---|---|
Type of eclipse | |
Nature | Annular |
Gamma | 0.2201 |
Magnitude | 0.969 |
Maximum eclipse | |
Duration | 191 s (3 min 11 s) |
Coordinates | 15°36′N114°06′W / 15.6°N 114.1°W |
Max. width of band | 114 km (71 mi) |
Times (UTC) | |
Greatest eclipse | 19:58:59 |
References | |
Saros | 134 (41 of 71) |
Catalog # (SE5000) | 9441 |
An annular solar eclipse occurred on September 11, 1969.
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.
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 | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
119 | 1968 March 28 Partial | −1.03704 | 124 | 1968 September 22 Total | 0.94507 | |
129 | 1969 March 18 Annular | −0.27037 | 134 | 1969 September 11 Annular | 0.22014 | |
139 | 1970 March 7 Total | 0.44728 | 144 | 1970 August 31 Annular | −0.53640 | |
149 | 1971 February 25 Partial | 1.11876 | 154 | 1971 August 20 Partial | −1.26591 | |
A partial solar eclipse of July 22, 1971 occurs in the next lunar year set. |
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: | ||
---|---|---|
32 | 33 | 34 |
June 6, 1807 | June 16, 1825 | June 27, 1843 |
35 | 36 | 37 |
July 8, 1861 | July 19, 1879 | July 29, 1897 |
38 | 39 | 40 |
August 10, 1915 | August 21, 1933 | September 1, 1951 |
41 | 42 | 43 |
September 11, 1969 | September 23, 1987 | October 3, 2005 |
44 | 45 | 46 |
October 14, 2023 | October 25, 2041 | November 5, 2059 |
47 | 48 | |
November 15, 2077 | November 27, 2095 |
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 | |||
---|---|---|---|
December 21, 1805 (Saros 119) | November 19, 1816 (Saros 120) | October 20, 1827 (Saros 121) | |
September 18, 1838 (Saros 122) | August 18, 1849 (Saros 123) | July 18, 1860 (Saros 124) | |
June 18, 1871 (Saros 125) | May 17, 1882 (Saros 126) | April 16, 1893 (Saros 127) | |
March 17, 1904 (Saros 128) | February 14, 1915 (Saros 129) | January 14, 1926 (Saros 130) | |
December 13, 1936 (Saros 131) | November 12, 1947 (Saros 132) | October 12, 1958 (Saros 133) | |
September 11, 1969 (Saros 134) | August 10, 1980 (Saros 135) | July 11, 1991 (Saros 136) | |
June 10, 2002 (Saros 137) | May 10, 2013 (Saros 138) | April 8, 2024 (Saros 139) | |
March 9, 2035 (Saros 140) | February 5, 2046 (Saros 141) | January 5, 2057 (Saros 142) | |
December 6, 2067 (Saros 143) | November 4, 2078 (Saros 144) | October 4, 2089 (Saros 145) | |
September 4, 2100 (Saros 146) |
In the 22nd century:
In the 23rd century:
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 11-12 | June 30-July 1 | April 17-19 | February 4-5 | November 22-23 |
114 | 116 | 118 | 120 | 122 |
September 12, 1931 | June 30, 1935 | April 19, 1939 | February 4, 1943 | November 23, 1946 |
124 | 126 | 128 | 130 | 132 |
September 12, 1950 | June 30, 1954 | April 19, 1958 | February 5, 1962 | November 23, 1965 |
134 | 136 | 138 | 140 | 142 |
September 11, 1969 | June 30, 1973 | April 18, 1977 | February 4, 1981 | November 22, 1984 |
144 | 146 | 148 | 150 | 152 |
September 11, 1988 | June 30, 1992 | April 17, 1996 | February 5, 2000 | November 23, 2003 |
154 | 156 | |||
September 11, 2007 | July 1, 2011 |
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