Solar eclipse of January 16, 1972 | |
---|---|
Type of eclipse | |
Nature | Annular |
Gamma | −0.9365 |
Magnitude | 0.9692 |
Maximum eclipse | |
Duration | 113 s (1 min 53 s) |
Coordinates | 74°54′S107°42′E / 74.9°S 107.7°E |
Max. width of band | 321 km (199 mi) |
Times (UTC) | |
Greatest eclipse | 11:03:22 |
References | |
Saros | 121 (58 of 71) |
Catalog # (SE5000) | 9447 |
An annular solar eclipse occurred at the Moon's ascending node of orbit on Sunday, January 16, 1972, with a magnitude of 0.9692. 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.
The areas included were the whole of Antarctica, a part of the southernmost portion of South America much of it in Argentina and a smaller part of Chile, much of it in the region of Patagonia, also it included New Amsterdam and the southern islands of the Indian Ocean,. The annular eclipse took place in western, southern and eastern Antarctica with its greatest eclipse in the eastcentral portion of the continent near the 75th parallel. The eclipse's edges were in Réunion and Mauritius, the eclipse was close to the island of Madagascar. The subsolar portion was in northcentral South West Africa (now Namibia).
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 eclipses on February 25, 1971 and August 20, 1971 occur in the previous lunar year eclipse set.
Solar eclipse series sets from 1971 to 1974 | ||||||
---|---|---|---|---|---|---|
Descending node | Ascending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
116 | July 22, 1971 Partial | 1.513 | 121 | January 16, 1972 Annular | −0.9365 | |
126 | July 10, 1972 Total | 0.6872 | 131 | January 4, 1973 Annular | −0.2644 | |
136 | June 30, 1973 Total | −0.0785 | 141 | December 24, 1973 Annular | 0.4171 | |
146 | June 20, 1974 Total | −0.8239 | 151 | December 13, 1974 Partial | 1.0797 |
This eclipse is a part of Saros series 121, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on April 25, 944 AD. It contains total eclipses from July 10, 1070 through October 9, 1809; hybrid eclipses on October 20, 1827 and October 30, 1845; and annular eclipses from November 11, 1863 through February 28, 2044. The series ends at member 71 as a partial eclipse on June 7, 2206. 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 totality was produced by member 39 at 6 minutes, 20 seconds on June 21, 1629, and the longest duration of annularity will be produced by member 62 at 2 minutes, 27 seconds on February 28, 2044. All eclipses in this series occur at the Moon’s ascending node of orbit. [2]
Series members 49–70 occur between 1801 and 2200: | ||
---|---|---|
49 | 50 | 51 |
October 9, 1809 | October 20, 1827 | October 30, 1845 |
52 | 53 | 54 |
November 11, 1863 | November 21, 1881 | December 3, 1899 |
55 | 56 | 57 |
December 14, 1917 | December 25, 1935 | January 5, 1954 |
58 | 59 | 60 |
January 16, 1972 | January 26, 1990 | February 7, 2008 |
61 | 62 | 63 |
February 17, 2026 | February 28, 2044 | March 11, 2062 |
64 | 65 | 66 |
March 21, 2080 | April 1, 2098 | April 13, 2116 |
67 | 68 | 69 |
April 24, 2134 | May 4, 2152 | May 16, 2170 |
70 | ||
May 26, 2188 |
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.
20 eclipse events between June 10, 1964 and August 21, 2036 | ||||
---|---|---|---|---|
June 10–11 | March 28–29 | January 14–16 | November 3 | August 21–22 |
117 | 119 | 121 | 123 | 125 |
June 10, 1964 | March 28, 1968 | January 16, 1972 | November 3, 1975 | August 22, 1979 |
127 | 129 | 131 | 133 | 135 |
June 11, 1983 | March 29, 1987 | January 15, 1991 | November 3, 1994 | August 22, 1998 |
137 | 139 | 141 | 143 | 145 |
June 10, 2002 | March 29, 2006 | January 15, 2010 | November 3, 2013 | August 21, 2017 |
147 | 149 | 151 | 153 | 155 |
June 10, 2021 | March 29, 2025 | January 14, 2029 | November 3, 2032 | August 21, 2036 |
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 2200 | ||||
---|---|---|---|---|
March 25, 1819 (Saros 107) | February 23, 1830 (Saros 108) | January 22, 1841 (Saros 109) | November 21, 1862 (Saros 111) | |
August 20, 1895 (Saros 114) | July 21, 1906 (Saros 115) | June 19, 1917 (Saros 116) | ||
May 19, 1928 (Saros 117) | April 19, 1939 (Saros 118) | March 18, 1950 (Saros 119) | February 15, 1961 (Saros 120) | January 16, 1972 (Saros 121) |
December 15, 1982 (Saros 122) | November 13, 1993 (Saros 123) | October 14, 2004 (Saros 124) | September 13, 2015 (Saros 125) | August 12, 2026 (Saros 126) |
July 13, 2037 (Saros 127) | June 11, 2048 (Saros 128) | May 11, 2059 (Saros 129) | April 11, 2070 (Saros 130) | March 10, 2081 (Saros 131) |
February 7, 2092 (Saros 132) | January 8, 2103 (Saros 133) | December 8, 2113 (Saros 134) | November 6, 2124 (Saros 135) | October 7, 2135 (Saros 136) |
September 6, 2146 (Saros 137) | August 5, 2157 (Saros 138) | July 5, 2168 (Saros 139) | June 5, 2179 (Saros 140) | May 4, 2190 (Saros 141) |
This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
Series members between 1801 and 2200 | ||
---|---|---|
April 26, 1827 (Saros 116) | April 5, 1856 (Saros 117) | March 16, 1885 (Saros 118) |
February 25, 1914 (Saros 119) | February 4, 1943 (Saros 120) | January 16, 1972 (Saros 121) |
December 25, 2000 (Saros 122) | December 5, 2029 (Saros 123) | November 16, 2058 (Saros 124) |
October 26, 2087 (Saros 125) | October 6, 2116 (Saros 126) | September 16, 2145 (Saros 127) |
August 27, 2174 (Saros 128) |
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