Solar eclipse of August 21, 1933 | |
---|---|
Type of eclipse | |
Nature | Annular |
Gamma | 0.0869 |
Magnitude | 0.9801 |
Maximum eclipse | |
Duration | 124 s (2 min 4 s) |
Coordinates | 16°54′N95°54′E / 16.9°N 95.9°E |
Max. width of band | 71 km (44 mi) |
Times (UTC) | |
Greatest eclipse | 5:49:11 |
References | |
Saros | 134 (39 of 71) |
Catalog # (SE5000) | 9359 |
An annular solar eclipse occurred at the Moon's descending node of orbit on Monday, August 21, 1933, [1] with a magnitude of 0.9801. 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 only 5.6 days after apogee (on August 15, 1933, at 15:40 UTC), the Moon's apparent diameter was smaller. [2]
Annularity was visible from Italian Libya (today's Libya), Egypt, Mandatory Palestine (today's Israel, Palestine and Jordan) including Jerusalem and Amman, French Mandate for Syria and the Lebanon (the part now belonging to Syria), Iraq including Baghdad, Persia, Afghanistan, British Raj (the parts now belonging to Pakistan, India, Bangladesh and Myanmar), Siam (name changed to Thailand later), Dutch East Indies (today's Indonesia), North Borneo (now belonging to Malaysia), and Australia. A partial eclipse was visible for parts of Northeast Africa, Eastern Europe, Asia, and Australia.
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 | 1933 August 21 at 02:52:30.3 UTC |
First Umbral External Contact | 1933 August 21 at 03:54:48.4 UTC |
First Central Line | 1933 August 21 at 03:55:58.9 UTC |
Greatest Duration | 1933 August 21 at 03:55:58.9 UTC |
First Umbral Internal Contact | 1933 August 21 at 03:57:09.4 UTC |
First Penumbral Internal Contact | 1933 August 21 at 04:59:51.0 UTC |
Equatorial Conjunction | 1933 August 21 at 05:44:23.7 UTC |
Ecliptic Conjunction | 1933 August 21 at 05:48:11.5 UTC |
Greatest Eclipse | 1933 August 21 at 05:49:10.9 UTC |
Last Penumbral Internal Contact | 1933 August 21 at 06:38:38.7 UTC |
Last Umbral Internal Contact | 1933 August 21 at 07:41:17.5 UTC |
Last Central Line | 1933 August 21 at 07:42:25.2 UTC |
Last Umbral External Contact | 1933 August 21 at 07:43:32.9 UTC |
Last Penumbral External Contact | 1933 August 21 at 08:45:47.4 UTC |
Parameter | Value |
---|---|
Eclipse Magnitude | 0.98011 |
Eclipse Obscuration | 0.96062 |
Gamma | 0.08688 |
Sun Right Ascension | 09h59m34.9s |
Sun Declination | +12°16'29.3" |
Sun Semi-Diameter | 15'48.7" |
Sun Equatorial Horizontal Parallax | 08.7" |
Moon Right Ascension | 09h59m43.6s |
Moon Declination | +12°20'51.3" |
Moon Semi-Diameter | 15'15.5" |
Moon Equatorial Horizontal Parallax | 0°55'59.9" |
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. The first and last eclipse in this sequence is separated by one synodic month.
August 5 Ascending node (full moon) | August 21 Descending node (new moon) | September 4 Ascending node (full moon) |
---|---|---|
Penumbral lunar eclipse Lunar Saros 108 | Annular solar eclipse Solar Saros 134 | Penumbral lunar eclipse Lunar Saros 146 |
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 134, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on June 22, 1248. It contains total eclipses from October 9, 1428 through December 24, 1554; hybrid eclipses from January 3, 1573 through June 27, 1843; and annular eclipses from July 8, 1861 through May 21, 2384. The series ends at member 72 as a partial eclipse on August 6, 2510. 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 11 at 1 minutes, 30 seconds on October 9, 1428, and the longest duration of annularity will be produced by member 52 at 10 minutes, 55 seconds on January 10, 2168. All eclipses in this series occur at the Moon’s descending node of orbit. [5]
Series members 32–53 occur between 1801 and 2200: | ||
---|---|---|
32 | 33 | 34 |
June 6, 1807 | June 16, 1825 | June 27, 1843 |
35 | 36 | 37 |
July 8, 1861 | July 19, 1879 | July 29, 1897 |
38 | 39 | 40 |
August 10, 1915 | August 21, 1933 | September 1, 1951 |
41 | 42 | 43 |
September 11, 1969 | September 23, 1987 | October 3, 2005 |
44 | 45 | 46 |
October 14, 2023 | October 25, 2041 | November 5, 2059 |
47 | 48 | 49 |
November 15, 2077 | November 27, 2095 | December 8, 2113 |
50 | 51 | 52 |
December 19, 2131 | December 30, 2149 | January 10, 2168 |
53 | ||
January 20, 2186 |
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 March 27, 1884 and August 20, 1971 | ||||
---|---|---|---|---|
March 27–29 | January 14 | November 1–2 | August 20–21 | June 8 |
108 | 110 | 112 | 114 | 116 |
March 27, 1884 | August 20, 1895 | June 8, 1899 | ||
118 | 120 | 122 | 124 | 126 |
March 29, 1903 | January 14, 1907 | November 2, 1910 | August 21, 1914 | June 8, 1918 |
128 | 130 | 132 | 134 | 136 |
March 28, 1922 | January 14, 1926 | November 1, 1929 | August 21, 1933 | June 8, 1937 |
138 | 140 | 142 | 144 | 146 |
March 27, 1941 | January 14, 1945 | November 1, 1948 | August 20, 1952 | June 8, 1956 |
148 | 150 | 152 | 154 | |
March 27, 1960 | January 14, 1964 | November 2, 1967 | August 20, 1971 |
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 | ||||
---|---|---|---|---|
August 28, 1802 (Saros 122) | July 27, 1813 (Saros 123) | June 26, 1824 (Saros 124) | May 27, 1835 (Saros 125) | April 25, 1846 (Saros 126) |
March 25, 1857 (Saros 127) | February 23, 1868 (Saros 128) | January 22, 1879 (Saros 129) | December 22, 1889 (Saros 130) | November 22, 1900 (Saros 131) |
October 22, 1911 (Saros 132) | September 21, 1922 (Saros 133) | August 21, 1933 (Saros 134) | July 20, 1944 (Saros 135) | June 20, 1955 (Saros 136) |
May 20, 1966 (Saros 137) | April 18, 1977 (Saros 138) | March 18, 1988 (Saros 139) | February 16, 1999 (Saros 140) | January 15, 2010 (Saros 141) |
December 14, 2020 (Saros 142) | November 14, 2031 (Saros 143) | October 14, 2042 (Saros 144) | September 12, 2053 (Saros 145) | August 12, 2064 (Saros 146) |
July 13, 2075 (Saros 147) | June 11, 2086 (Saros 148) | May 11, 2097 (Saros 149) | April 11, 2108 (Saros 150) | March 11, 2119 (Saros 151) |
February 8, 2130 (Saros 152) | January 8, 2141 (Saros 153) | December 8, 2151 (Saros 154) | November 7, 2162 (Saros 155) | October 7, 2173 (Saros 156) |
September 4, 2184 (Saros 157) | August 5, 2195 (Saros 158) |
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 | ||
---|---|---|
November 9, 1817 (Saros 130) | October 20, 1846 (Saros 131) | September 29, 1875 (Saros 132) |
September 9, 1904 (Saros 133) | August 21, 1933 (Saros 134) | July 31, 1962 (Saros 135) |
July 11, 1991 (Saros 136) | June 21, 2020 (Saros 137) | May 31, 2049 (Saros 138) |
May 11, 2078 (Saros 139) | April 23, 2107 (Saros 140) | April 1, 2136 (Saros 141) |
March 12, 2165 (Saros 142) | February 21, 2194 (Saros 143) |
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