Solar eclipse of May 29, 1938
A total solar eclipse occurred at the Moon's descending node of orbit on Sunday, May 29, 1938,[1] with a magnitude of 1.0552. 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. Occurring about 1.2 days before perigee (on May 30, 1938, at 17:30 UTC), the Moon's apparent diameter was larger.[2]
The path of totality was mostly on the sea. The only land that was covered was South Orkney Islands of Antarctica, as well as South Georgia except for its northwestern part, Zavodovski Island and Visokoi Island controlled by the United Kingdom. A partial eclipse was visible for parts of southern and central South America and Southern Africa. This was the first of 41 umbral eclipses of Solar Saros 146.
Eclipse details
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 | 1938 May 29 at 11:46:36.9 UTC |
First Umbral External Contact | 1938 May 29 at 13:17:53.5 UTC |
First Central Line | 1938 May 29 at 13:22:34.9 UTC |
First Umbral Internal Contact | 1938 May 29 at 13:28:10.1 UTC |
Equatorial Conjunction | 1938 May 29 at 13:43:32.0 UTC |
Greatest Eclipse | 1938 May 29 at 13:50:18.5 UTC |
Greatest Duration | 1938 May 29 at 13:50:38.6 UTC |
Ecliptic Conjunction | 1938 May 29 at 13:59:56.4 UTC |
Last Umbral Internal Contact | 1938 May 29 at 14:12:30.3 UTC |
Last Central Line | 1938 May 29 at 14:18:06.8 UTC |
Last Umbral External Contact | 1938 May 29 at 14:22:49.5 UTC |
Last Penumbral External Contact | 1938 May 29 at 15:54:00.6 UTC |
Parameter | Value |
---|---|
Eclipse Magnitude | 1.05523 |
Eclipse Obscuration | 1.11351 |
Gamma | −0.96068 |
Sun Right Ascension | 04h22m54.3s |
Sun Declination | +21°34'16.3" |
Sun Semi-Diameter | 15'46.6" |
Sun Equatorial Horizontal Parallax | 08.7" |
Moon Right Ascension | 04h23m11.2s |
Moon Declination | +20°36'05.3" |
Moon Semi-Diameter | 16'34.8" |
Moon Equatorial Horizontal Parallax | 1°00'50.8" |
ΔT | 24.0 s |
Eclipse season
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.
May 14 Ascending node (full moon) | May 29 Descending node (new moon) |
---|---|
![]() | ![]() |
Total lunar eclipse Lunar Saros 120 | Total solar eclipse Solar Saros 146 |
Related eclipses
Eclipses in 1938
- A total lunar eclipse on May 14.
- A total solar eclipse on May 29.
- A total lunar eclipse on November 7.
- A partial solar eclipse on November 21.
Metonic
- Preceded by: Solar eclipse of August 10, 1934
- Followed by: Solar eclipse of March 16, 1942
Tzolkinex
- Preceded by: Solar eclipse of April 18, 1931
- Followed by: Solar eclipse of July 9, 1945
Half-Saros
- Preceded by: Lunar eclipse of May 23, 1929
- Followed by: Lunar eclipse of June 3, 1947
Tritos
- Preceded by: Solar eclipse of June 29, 1927
- Followed by: Solar eclipse of April 28, 1949
Solar Saros 146
- Preceded by: Solar eclipse of May 18, 1920
- Followed by: Solar eclipse of June 8, 1956
Inex
- Preceded by: Solar eclipse of June 17, 1909
- Followed by: Solar eclipse of May 9, 1967
Triad
- Preceded by: Solar eclipse of July 28, 1851
- Followed by: Solar eclipse of March 29, 2025
Solar eclipses of 1935–1938
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 February 3, 1935 and July 30, 1935 occur in the previous lunar year eclipse set.
Solar eclipse series sets from 1935 to 1938 | ||||||
---|---|---|---|---|---|---|
Ascending node | Descending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
111 | January 5, 1935![]() Partial | −1.5381 | 116 | June 30, 1935![]() Partial | 1.3623 | |
121 | December 25, 1935![]() Annular | −0.9228 | 126 | June 19, 1936![]() Total | 0.5389 | |
131 | December 13, 1936![]() Annular | −0.2493 | 136![]() Totality in Kanton Island, Kiribati | June 8, 1937![]() Total | −0.2253 | |
141 | December 2, 1937![]() Annular | 0.4389 | 146 | May 29, 1938![]() Total | −0.9607 | |
151 | November 21, 1938![]() Partial | 1.1077 |
Saros 146
This eclipse is a part of Saros series 146, repeating every 18 years, 11 days, and containing 76 events. The series started with a partial solar eclipse on September 19, 1541. It contains total eclipses from May 29, 1938 through October 7, 2154; hybrid eclipses from October 17, 2172 through November 20, 2226; and annular eclipses from November 30, 2244 through August 10, 2659. The series ends at member 76 as a partial eclipse on December 29, 2893. 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 26 at 5 minutes, 21 seconds on June 30, 1992, and the longest duration of annularity will be produced by member 63 at 3 minutes, 30 seconds on August 10, 2659. All eclipses in this series occur at the Moon’s descending node of orbit.[5]
Series members 16–37 occur between 1801 and 2200: | ||
---|---|---|
16 | 17 | 18 |
![]() March 13, 1812 | ![]() March 24, 1830 | ![]() April 3, 1848 |
19 | 20 | 21 |
![]() April 15, 1866 | ![]() April 25, 1884 | ![]() May 7, 1902 |
22 | 23 | 24 |
![]() May 18, 1920 | ![]() May 29, 1938 | ![]() June 8, 1956 |
25 | 26 | 27 |
![]() June 20, 1974 | ![]() June 30, 1992 | ![]() July 11, 2010 |
28 | 29 | 30 |
![]() July 22, 2028 | ![]() August 2, 2046 | ![]() August 12, 2064 |
31 | 32 | 33 |
![]() August 24, 2082 | ![]() September 4, 2100 | ![]() September 15, 2118 |
34 | 35 | 36 |
![]() September 26, 2136 | ![]() October 7, 2154 | ![]() October 17, 2172 |
37 | ||
![]() October 29, 2190 |
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 March 16, 1866 and August 9, 1953 | ||||
---|---|---|---|---|
March 16–17 | January 1–3 | October 20–22 | August 9–10 | May 27–29 |
108 | 110 | 112 | 114 | 116 |
![]() March 16, 1866 | ![]() August 9, 1877 | ![]() May 27, 1881 | ||
118 | 120 | 122 | 124 | 126 |
![]() March 16, 1885 | ![]() January 1, 1889 | ![]() October 20, 1892 | ![]() August 9, 1896 | ![]() May 28, 1900 |
128 | 130 | 132 | 134 | 136 |
![]() March 17, 1904 | ![]() January 3, 1908 | ![]() October 22, 1911 | ![]() August 10, 1915 | ![]() May 29, 1919 |
138 | 140 | 142 | 144 | 146 |
![]() March 17, 1923 | ![]() January 3, 1927 | ![]() October 21, 1930 | ![]() August 10, 1934 | ![]() May 29, 1938 |
148 | 150 | 152 | 154 | |
![]() March 16, 1942 | ![]() January 3, 1946 | ![]() October 21, 1949 | ![]() August 9, 1953 |
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.
The partial solar eclipses on November 16, 2134 (part of Saros 164) and October 16, 2145 (part of Saros 165) are also a part of this series but are not included in the table below.
Series members between 1801 and 2069 | ||||
---|---|---|---|---|
![]() June 6, 1807 (Saros 134) | ![]() May 5, 1818 (Saros 135) | ![]() April 3, 1829 (Saros 136) | ![]() March 4, 1840 (Saros 137) | ![]() February 1, 1851 (Saros 138) |
![]() December 31, 1861 (Saros 139) | ![]() November 30, 1872 (Saros 140) | ![]() October 30, 1883 (Saros 141) | ![]() September 29, 1894 (Saros 142) | ![]() August 30, 1905 (Saros 143) |
![]() July 30, 1916 (Saros 144) | ![]() June 29, 1927 (Saros 145) | ![]() May 29, 1938 (Saros 146) | ![]() April 28, 1949 (Saros 147) | ![]() March 27, 1960 (Saros 148) |
![]() February 25, 1971 (Saros 149) | ![]() January 25, 1982 (Saros 150) | ![]() December 24, 1992 (Saros 151) | ![]() November 23, 2003 (Saros 152) | ![]() October 23, 2014 (Saros 153) |
![]() September 21, 2025 (Saros 154) | ![]() August 21, 2036 (Saros 155) | ![]() July 22, 2047 (Saros 156) | ![]() June 21, 2058 (Saros 157) | ![]() May 20, 2069 (Saros 158) |
Inex series
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 | ||
---|---|---|
![]() August 16, 1822 (Saros 142) | ![]() July 28, 1851 (Saros 143) | ![]() July 7, 1880 (Saros 144) |
![]() June 17, 1909 (Saros 145) | ![]() May 29, 1938 (Saros 146) | ![]() May 9, 1967 (Saros 147) |
![]() April 17, 1996 (Saros 148) | ![]() March 29, 2025 (Saros 149) | ![]() March 9, 2054 (Saros 150) |
![]() February 16, 2083 (Saros 151) | ![]() January 29, 2112 (Saros 152) | ![]() January 8, 2141 (Saros 153) |
![]() December 18, 2169 (Saros 154) | ![]() November 28, 2198 (Saros 155) |
References
- ^ "May 29, 1938 Total Solar Eclipse". timeanddate. Retrieved 3 August 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 3 August 2024.
- ^ "Total Solar Eclipse of 1938 May 29". EclipseWise.com. Retrieved 3 August 2024.
- ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
- ^ "NASA - Catalog of Solar Eclipses of Saros 146". eclipse.gsfc.nasa.gov.
- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
- Google interactive map
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