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20th-century annular solar eclipse From Wikipedia, the free encyclopedia
An annular solar eclipse occurred at the Moon's ascending node of orbit on Monday, March 7, 1932,[1] with a magnitude of 0.9277. 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. Occurring about 3.6 days before apogee (on March 10, 1932, at 22:00 UTC), the Moon's apparent diameter was smaller.[2]
Annularity was visible from parts of Antarctica and southern Tasmania. A partial eclipse was visible for parts of Antarctica, Australia, and Southeast Asia.
Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.[3]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 1932 March 07 at 05:31:28.9 UTC |
| Equatorial Conjunction | 1932 March 07 at 06:54:13.1 UTC |
| First Umbral External Contact | 1932 March 07 at 07:18:12.4 UTC |
| First Central Line | 1932 March 07 at 07:27:34.8 UTC |
| First Umbral Internal Contact | 1932 March 07 at 07:41:47.8 UTC |
| Ecliptic Conjunction | 1932 March 07 at 07:44:37.0 UTC |
| Greatest Eclipse | 1932 March 07 at 07:55:50.3 UTC |
| Greatest Duration | 1932 March 07 at 07:56:35.0 UTC |
| Last Umbral Internal Contact | 1932 March 07 at 08:10:29.9 UTC |
| Last Central Line | 1932 March 07 at 08:24:44.0 UTC |
| Last Umbral External Contact | 1932 March 07 at 08:34:07.6 UTC |
| Last Penumbral External Contact | 1932 March 07 at 10:20:39.8 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 0.92767 |
| Eclipse Obscuration | 0.86057 |
| Gamma | −0.96731 |
| Sun Right Ascension | 23h10m29.5s |
| Sun Declination | -05°18'43.8" |
| Sun Semi-Diameter | 16'06.7" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 23h12m10.8s |
| Moon Declination | -06°05'03.9" |
| Moon Semi-Diameter | 14'53.9" |
| Moon Equatorial Horizontal Parallax | 0°54'40.6" |
| ΔT | 23.9 s |
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight.
| March 7 Ascending node (new moon) | March 22 Descending node (full moon) |
|---|---|
|  |
| Annular solar eclipse Solar Saros 119 | Partial lunar eclipse Lunar Saros 131 |
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.[4]
The partial solar eclipses on April 18, 1931 and October 11, 1931 occur in the previous lunar year eclipse set, and the solar eclipses on January 5, 1935 (partial), June 30, 1935 (partial), and December 25, 1935 (annular) occur in the next lunar year eclipse set.
| Solar eclipse series sets from 1931 to 1935 | ||||||
|---|---|---|---|---|---|---|
| Descending node | Ascending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 114 | September 12, 1931 Partial |
1.506 | 119 | March 7, 1932 Annular |
−0.9673 | |
| 124 | August 31, 1932 Total |
0.8307 | 129 | February 24, 1933 Annular |
−0.2191 | |
| 134 | August 21, 1933 Annular |
0.0869 | 139 | February 14, 1934 Total |
0.4868 | |
| 144 | August 10, 1934 Annular |
−0.689 | 149 | February 3, 1935 Partial |
1.1438 | |
| 154 | July 30, 1935 Partial |
−1.4259 | ||||
This eclipse is a part of Saros series 119, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on May 15, 850 AD. It contains total eclipses on August 9, 994 AD and August 20, 1012; a hybrid eclipse on August 31, 1030; and annular eclipses from September 10, 1048 through March 18, 1950. The series ends at member 71 as a partial eclipse on June 24, 2112. 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 10 at 32 seconds on August 20, 1012, and the longest duration of annularity was produced by member 44 at 7 minutes, 37 seconds on September 1, 1625. All eclipses in this series occur at the Moon’s ascending node of orbit.[5]
| Series members 54–71 occur between 1801 and 2112: | ||
|---|---|---|
| 54 | 55 | 56 |
 December 21, 1805 |
 January 1, 1824 |
 January 11, 1842 |
| 57 | 58 | 59 |
 January 23, 1860 |
 February 2, 1878 |
 February 13, 1896 |
| 60 | 61 | 62 |
 February 25, 1914 |
March 7, 1932 |
 March 18, 1950 |
| 63 | 64 | 65 |
 March 28, 1968 |
 April 9, 1986 |
 April 19, 2004 |
| 66 | 67 | 68 |
 April 30, 2022 |
 May 11, 2040 |
 May 22, 2058 |
| 69 | 70 | 71 |
 June 1, 2076 |
 June 13, 2094 |
 June 24, 2112 |
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 December 24, 1916 and July 31, 2000 | ||||
|---|---|---|---|---|
| December 24–25 | October 12 | July 31–August 1 | May 19–20 | March 7 |
| 111 | 113 | 115 | 117 | 119 |
 December 24, 1916 |
 July 31, 1924 |
 May 19, 1928 |
March 7, 1932 | |
| 121 | 123 | 125 | 127 | 129 |
 December 25, 1935 |
 October 12, 1939 |
 August 1, 1943 |
 May 20, 1947 |
 March 7, 1951 |
| 131 | 133 | 135 | 137 | 139 |
 December 25, 1954 |
 October 12, 1958 |
 July 31, 1962 |
 May 20, 1966 |
 March 7, 1970 |
| 141 | 143 | 145 | 147 | 149 |
 December 24, 1973 |
 October 12, 1977 |
 July 31, 1981 |
 May 19, 1985 |
 March 7, 1989 |
| 151 | 153 | 155 | ||
 December 24, 1992 |
 October 12, 1996 |
 July 31, 2000 | ||
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 14, 1801 (Saros 107) |
 February 12, 1812 (Saros 108) |
 January 12, 1823 (Saros 109) |
 November 10, 1844 (Saros 111) | |
 August 9, 1877 (Saros 114) |
 July 9, 1888 (Saros 115) |
 June 8, 1899 (Saros 116) | ||
 May 9, 1910 (Saros 117) |
 April 8, 1921 (Saros 118) |
March 7, 1932 (Saros 119) |
 February 4, 1943 (Saros 120) |
 January 5, 1954 (Saros 121) |
 December 4, 1964 (Saros 122) |
 November 3, 1975 (Saros 123) |
 October 3, 1986 (Saros 124) |
 September 2, 1997 (Saros 125) |
 August 1, 2008 (Saros 126) |
 July 2, 2019 (Saros 127) |
 June 1, 2030 (Saros 128) |
 April 30, 2041 (Saros 129) |
 March 30, 2052 (Saros 130) |
 February 28, 2063 (Saros 131) |
 January 27, 2074 (Saros 132) |
 December 27, 2084 (Saros 133) |
 November 27, 2095 (Saros 134) |
 October 26, 2106 (Saros 135) |
 September 26, 2117 (Saros 136) |
 August 25, 2128 (Saros 137) |
 July 25, 2139 (Saros 138) |
 June 25, 2150 (Saros 139) |
 May 25, 2161 (Saros 140) |
 April 23, 2172 (Saros 141) |
 March 23, 2183 (Saros 142) |
 February 21, 2194 (Saros 143) | |||
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 | ||
|---|---|---|
 May 27, 1816 (Saros 115) |
 May 6, 1845 (Saros 116) |
 April 16, 1874 (Saros 117) |
 March 29, 1903 (Saros 118) |
March 7, 1932 (Saros 119) |
 February 15, 1961 (Saros 120) |
 January 26, 1990 (Saros 121) |
 January 6, 2019 (Saros 122) |
 December 16, 2047 (Saros 123) |
 November 26, 2076 (Saros 124) |
 November 6, 2105 (Saros 125) |
 October 17, 2134 (Saros 126) |
 September 28, 2163 (Saros 127) |
 September 6, 2192 (Saros 128) |
|
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