Solar eclipse of November 22, 1984 | |
---|---|
Type of eclipse | |
Nature | Total |
Gamma | −0.3132 |
Magnitude | 1.0237 |
Maximum eclipse | |
Duration | 120 s (2 min 0 s) |
Coordinates | 37°48′S173°36′W / 37.8°S 173.6°W |
Max. width of band | 85 km (53 mi) |
Times (UTC) | |
Greatest eclipse | 22:54:17 |
References | |
Saros | 142 (21 of 72) |
Catalog # (SE5000) | 9475 |
A total solar eclipse occurred at the Moon's descending node of orbit on Thursday, November 22, 1984, with a magnitude of 1.0237. 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. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. Totality was visible in Indonesia, Papua New Guinea and southern Pacific Ocean. West of the International Date Line the eclipse took place on November 23, including all land in the path of totality. Occurring only 2.1 days after perigee (on November 20, 1984), the Moon's apparent diameter was fairly larger.
Jay Pasachoff led an observation team from Williams College in Massachusetts to Papua New Guinea, taking images of the process of the eclipse and the corona, as well as the Baily's beads and the illuminance of the corona. Besides the observations, the team members also went to places near the Sepik River in northern Papua New Guinea. [1]
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. [2]
The partial solar eclipses on January 25, 1982 and July 20, 1982 occur in the previous lunar year eclipse set.
Solar eclipse series sets from 1982 to 1985 | ||||||
---|---|---|---|---|---|---|
Ascending node | Descending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
117 | June 21, 1982 Partial | −1.2102 | 122 | December 15, 1982 Partial | 1.1293 | |
127 | June 11, 1983 Total | −0.4947 | 132 | December 4, 1983 Annular | 0.4015 | |
137 | May 30, 1984 Annular | 0.2755 | 142 Partial in Gisborne, New Zealand | November 22, 1984 Total | −0.3132 | |
147 | May 19, 1985 Partial | 1.072 | 152 | November 12, 1985 Total | −0.9795 |
This eclipse is a part of Saros series 142, repeating every 18 years, 11 days, and containing 72 events. The series started with a partial solar eclipse on April 17, 1624. It contains a hybrid eclipse on July 14, 1768, and total eclipses from July 25, 1786 through October 29, 2543. There are no annular eclipses in this set. The series ends at member 72 as a partial eclipse on June 5, 2904. 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 will be produced by member 38 at 6 minutes, 34 seconds on May 28, 2291. All eclipses in this series occur at the Moon’s descending node of orbit. [3]
Series members 11–32 occur between 1801 and 2200: | ||
---|---|---|
11 | 12 | 13 |
August 5, 1804 | August 16, 1822 | August 27, 1840 |
14 | 15 | 16 |
September 7, 1858 | September 17, 1876 | September 29, 1894 |
17 | 18 | 19 |
October 10, 1912 | October 21, 1930 | November 1, 1948 |
20 | 21 | 22 |
November 12, 1966 | November 22, 1984 | December 4, 2002 |
23 | 24 | 25 |
December 14, 2020 | December 26, 2038 | January 5, 2057 |
26 | 27 | 28 |
January 16, 2075 | January 27, 2093 | February 8, 2111 |
29 | 30 | 31 |
February 18, 2129 | March 2, 2147 | March 12, 2165 |
32 | ||
March 23, 2183 |
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 |
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 | ||||
---|---|---|---|---|
April 4, 1810 (Saros 126) | March 4, 1821 (Saros 127) | February 1, 1832 (Saros 128) | December 31, 1842 (Saros 129) | November 30, 1853 (Saros 130) |
October 30, 1864 (Saros 131) | September 29, 1875 (Saros 132) | August 29, 1886 (Saros 133) | July 29, 1897 (Saros 134) | June 28, 1908 (Saros 135) |
May 29, 1919 (Saros 136) | April 28, 1930 (Saros 137) | March 27, 1941 (Saros 138) | February 25, 1952 (Saros 139) | January 25, 1963 (Saros 140) |
December 24, 1973 (Saros 141) | November 22, 1984 (Saros 142) | October 24, 1995 (Saros 143) | September 22, 2006 (Saros 144) | August 21, 2017 (Saros 145) |
July 22, 2028 (Saros 146) | June 21, 2039 (Saros 147) | May 20, 2050 (Saros 148) | April 20, 2061 (Saros 149) | March 19, 2072 (Saros 150) |
February 16, 2083 (Saros 151) | January 16, 2094 (Saros 152) | December 17, 2104 (Saros 153) | November 16, 2115 (Saros 154) | October 16, 2126 (Saros 155) |
September 15, 2137 (Saros 156) | August 14, 2148 (Saros 157) | July 15, 2159 (Saros 158) | June 14, 2170 (Saros 159) | May 13, 2181 (Saros 160) |
April 12, 2192 (Saros 161) |
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 | ||
---|---|---|
March 24, 1811 (Saros 136) | March 4, 1840 (Saros 137) | February 11, 1869 (Saros 138) |
January 22, 1898 (Saros 139) | January 3, 1927 (Saros 140) | December 14, 1955 (Saros 141) |
November 22, 1984 (Saros 142) | November 3, 2013 (Saros 143) | October 14, 2042 (Saros 144) |
September 23, 2071 (Saros 145) | September 4, 2100 (Saros 146) | August 15, 2129 (Saros 147) |
July 25, 2158 (Saros 148) | July 6, 2187 (Saros 149) |
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