Solar eclipse of August 31, 1970
An annular solar eclipse occurred at the Moon's descending node of orbit between Monday, August 31 and Tuesday, September 1, 1970, with a magnitude of 0.94. 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 Territory of Papua and New Guinea (today's Papua New Guinea), Gilbert and Ellice Islands (the part that belongs to Tuvalu now) on September 1 (Tuesday), West Samoa (name changed to Samoa later) and the whole American Samoa except Swains Island on August 31 (Monday).
Related eclipses
Eclipses in 1970
- A partial lunar eclipse on February 21, 1970.
- A total solar eclipse on March 7, 1970.
- A partial lunar eclipse on August 17, 1970.
- An annular solar eclipse on August 31, 1970.
Metonic
- Preceded by: Solar eclipse of November 12, 1966
- Followed by: Solar eclipse of June 20, 1974
Tzolkinex
- Preceded by: Solar eclipse of July 20, 1963
- Followed by: Solar eclipse of October 12, 1977
Half-Saros
- Preceded by: Lunar eclipse of August 26, 1961
- Followed by: Lunar eclipse of September 6, 1979
Tritos
- Preceded by: Solar eclipse of October 2, 1959
- Followed by: Solar eclipse of July 31, 1981
Solar Saros 144
- Preceded by: Solar eclipse of August 20, 1952
- Followed by: Solar eclipse of September 11, 1988
Inex
- Preceded by: Solar eclipse of September 21, 1941
- Followed by: Solar eclipse of August 11, 1999
Triad
- Preceded by: Solar eclipse of October 30, 1883
- Followed by: Solar eclipse of July 1, 2057
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]
The partial solar eclipse on July 22, 1971 occurs in the next lunar year eclipse set.
Solar eclipse series sets from 1968 to 1971 | ||||||
---|---|---|---|---|---|---|
Ascending node | Descending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
119 | March 28, 2968 Partial | −1.037 | 124 | September 22, 1968 Total | 0.9451 | |
129 | March 18, 1969 Annular | −0.2704 | 134 | September 11, 1969 Annular | 0.2201 | |
139 Totality in Williamston, NC USA | March 7, 1970 Total | 0.4473 | 144 | August 31, 1970 Annular | −0.5364 | |
149 | February 25, 1971 Partial | 1.1188 | 154 | August 20, 1971 Partial | −1.2659 |
Saros 144
This eclipse is a part of Saros series 144, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on April 11, 1736. It contains annular eclipses from July 7, 1880 through August 27, 2565. There are no hybrid or total eclipses in this set. The series ends at member 70 as a partial eclipse on May 5, 2980. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
The longest duration of annularity will be produced by member 51 at 9 minutes, 52 seconds on December 29, 2168. All eclipses in this series occur at the Moon’s descending node of orbit.[2]
Series members 5–26 occur between 1801 and 2200: | ||
---|---|---|
5 | 6 | 7 |
May 25, 1808 | June 5, 1826 | June 16, 1844 |
8 | 9 | 10 |
June 27, 1862 | July 7, 1880 | July 18, 1898 |
11 | 12 | 13 |
July 30, 1916 | August 10, 1934 | August 20, 1952 |
14 | 15 | 16 |
August 31, 1970 | September 11, 1988 | September 22, 2006 |
17 | 18 | 19 |
October 2, 2024 | October 14, 2042 | October 24, 2060 |
20 | 21 | 22 |
November 4, 2078 | November 15, 2096 | November 27, 2114 |
23 | 24 | 25 |
December 7, 2132 | December 19, 2150 | December 29, 2168 |
26 | ||
January 9, 2187 |
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 1901 and 2100 | |||
---|---|---|---|
March 6, 1905 (Saros 138) | February 3, 1916 (Saros 139) | January 3, 1927 (Saros 140) | |
December 2, 1937 (Saros 141) | November 1, 1948 (Saros 142) | October 2, 1959 (Saros 143) | |
August 31, 1970 (Saros 144) | July 31, 1981 (Saros 145) | June 30, 1992 (Saros 146) | |
May 31, 2003 (Saros 147) | April 29, 2014 (Saros 148) | March 29, 2025 (Saros 149) | |
February 27, 2036 (Saros 150) | January 26, 2047 (Saros 151) | December 26, 2057 (Saros 152) | |
November 24, 2068 (Saros 153) | October 24, 2079 (Saros 154) | September 23, 2090 (Saros 155) |
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 April 8, 1902 and August 31, 1989 | ||||
---|---|---|---|---|
April 7–8 | January 24–25 | November 12 | August 31–September 1 | June 19–20 |
108 | 110 | 112 | 114 | 116 |
April 8, 1902 | August 31, 1913 | June 19, 1917 | ||
118 | 120 | 122 | 124 | 126 |
April 8, 1921 | January 24, 1925 | November 12, 1928 | August 31, 1932 | June 19, 1936 |
128 | 130 | 132 | 134 | 136 |
April 7, 1940 | January 25, 1944 | November 12, 1947 | September 1, 1951 | June 20, 1955 |
138 | 140 | 142 | 144 | 146 |
April 8, 1959 | January 25, 1963 | November 12, 1966 | August 31, 1970 | June 20, 1974 |
148 | 150 | 152 | 154 | |
April 7, 1978 | January 25, 1982 | November 12, 1985 | August 31, 1989 |
Notes
References
- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
- Google interactive map
- Besselian elements
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By era | |
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Saros series (list) | |
Visibility | |
Historical |
|
Total/hybrid eclipses
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- 1133
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- 1652
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- 2055
- Jan. 2057
- Dec. 2057
- 2059
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- 2088
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- 2094
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- 2096
- 2097
- 2099
- 2100
- 2186
Annular eclipses
→ next annular
- 1820
- 1854
- 1879
- 1889
- 1900
- 1901
- 1903
- 1904
- 1905
- 1907
- 1908
- 1911
- 1914
- Feb. 1915
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- Feb. 1933
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- 1947
- 1948
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- Mar. 1951
- Sep. 1951
- 1952
- Jan. 1954
- Dec. 1954
- 1955
- 1957
- 1958
- 1959
- 1961
- 1962
- 1963
- 1965
- 1966
- Mar. 1969
- Sep. 1969
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- 1972
- Jan. 1973
- Dec. 1973
- 1976
- 1977
- 1979
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- 1981
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- 2003
- 2005
- 2006
- 2008
- 2009
- 2010
- 2012
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- 2014
- 2016
- 2017
- 2019
- 2020
- 2021
- 2023
- → 2024
- 2026
- 2027
- 2028
- 2030
- 2031
- 2032
- 2034
- 2035
- 2036
- Jan. 2038
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- 2039
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- 2052
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- Jan. 2056
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- 2070
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- Jan. 2074
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- 2088
- 2089
- Feb. 2092
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- 2097
- 2099
- 2100
Partial eclipses
→ next partial
- Jan. 1639
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