Solar eclipse of August 10, 1980 | |
---|---|
Type of eclipse | |
Nature | Annular |
Gamma | -0.1915 |
Magnitude | 0.9727 |
Maximum eclipse | |
Duration | 203 sec (3 m 23 s) |
Coordinates | 4°36′N108°54′W / 4.6°N 108.9°W |
Max. width of band | 100 km (62 mi) |
Times (UTC) | |
Greatest eclipse | 19:12:21 |
References | |
Saros | 135 (37 of 71) |
Catalog # (SE5000) | 9465 |
An annular solar eclipse occurred at the Moon's ascending node of the orbit on August 10, 1980, centred over the Pacific Ocean. 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 in Tabuaeran of Kiribati, Peru, Bolivia, northern Paraguay and Brazil. Occurring 5 days before apogee (Apogee on Friday, August 15, 1980), the Moon's apparent diameter was smaller. At greatest eclipse, the Sun was 79 degrees (4,470 arc-minutes, or 284,400 arc-seconds) above horizon.
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] There were 8 solar eclipses between February 26, 1979 and July 20, 1982. Were there: February 26, 1979 (total solar eclipse, 0.8 days after perigee, 103.9%, 0.89811 gamma, saros 120), August 22, 1979 (small annular solar eclipse, 0.6 days before apogee, 93.3%, -0.96319 gamma, saros 125), February 16, 1980 (total solar eclipse, 1 day before perigee, 104.3%, 0.22244 gamma, saros 130), August 10, 1980 (large annular solar eclipse, 5 days before apogee, 97.3%, -0.19154 gamma, saros 135), February 4, 1981 (large annular solar eclipse, 4 days before perigee, 99.4%, -0.48375 gamma, saros 140), July 31, 1981 (total solar eclipse, 3.8 days after perigee, 102.6%, 0.57917 gamma, saros 145), January 25, 1982 (moderate partial solar eclipse, 4.7 days after apogee, 56.6%, -1.23110 gamma, saros 150) and July 20, 1982 (small partial solar eclipse, 0.9 days after perigee, 46.4%, 1.28859 gamma, saros 155).
Solar eclipse series sets from 1979–1982 | ||||||
---|---|---|---|---|---|---|
Descending node | Ascending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
120 | 1979 February 26 Total | 0.89811 | 125 | 1979 August 22 Annular | -0.96319 | |
130 | 1980 February 16 Total | 0.22244 | 135 | 1980 August 10 Annular | -0.19154 | |
140 | 1981 February 4 Annular | -0.48375 | 145 | 1981 July 31 Total | 0.57917 | |
150 | 1982 January 25 Partial | -1.23110 | 155 | 1982 July 20 Partial | 1.28859 | |
Partial solar eclipses on June 21, 1982 and December 15, 1982 occur in the next lunar year eclipse set. |
It is a part of Saros cycle 135, repeating every 18 years, 11 days, containing 71 events. The series started with partial solar eclipse on July 5, 1331. It contains annular eclipses from October 21, 1511, through February 24, 2305, hybrid eclipses on March 8, 2323, and March 18, 2341, and total eclipses from March 29, 2359, through May 22, 2449. The series ends at member 71 as a partial eclipse on August 17, 2593. The longest duration of totality will be 2 minutes, 27 seconds on May 12, 2431.
Series members 27–43 occur between 1800 and 2100: | ||
---|---|---|
27 | 28 | 29 |
Apr 24, 1800 | May 5, 1818 | May 15, 1836 |
30 | 31 | 32 |
May 26, 1854 | Jun 6, 1872 | Jun 17, 1890 |
33 | 34 | 35 |
Jun 28, 1908 | Jul 9, 1926 | Jul 20, 1944 |
36 | 37 | 38 |
Jul 31, 1962 | Aug 10, 1980 | Aug 22, 1998 |
39 | 40 | 41 |
Sep 1, 2016 | Sep 12, 2034 | Sep 22, 2052 |
42 | 43 | |
Oct 4, 2070 | Oct 14, 2088 |
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 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 |
Eclipses may occur repeatedly, separated by certain intervals of time: these intervals are called eclipse cycles. The series of eclipses separated by a repeat of one of these intervals is called an eclipse series.
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