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Solar eclipse of February 24, 1933

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Solar eclipse of February 24, 1933
Map
Type of eclipse
NatureAnnular
Gamma−0.2191
Magnitude0.9841
Maximum eclipse
Duration92 s (1 min 32 s)
Coordinates20°48′S 2°06′W / 20.8°S 2.1°W / -20.8; -2.1
Max. width of band58 km (36 mi)
Times (UTC)
Greatest eclipse12:46:39
References
Saros129 (47 of 80)
Catalog # (SE5000)9358

An annular solar eclipse occurred at the Moon's ascending node of orbit on Friday, February 24, 1933,[1] with a magnitude of 0.9841. 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). The Moon's apparent diameter was near the average diameter because it occurred 6.1 days after perigee (on February 18, 1933, at 10:50 UTC) and 7.25 days before apogee (on March 3, 1933, at 18:10 UTC).[2]

Annularity was visible from Chile, Argentina, Portuguese Angola (today's Angola), French Equatorial Africa (parts now belonging to R. Congo and Central African Republic), Belgian Congo (today's DR Congo), Anglo-Egyptian Sudan (parts now belonging to South Sudan and Sudan), Ethiopia, French Somaliland (today's Djibouti), southeastern Italian Eritrea (today's Eritrea), and Mutawakkilite Kingdom of Yemen, Aden Protectorate and Aden Province in British Raj (now belonging to Yemen). A partial eclipse was visible for parts of southern and central South America, Antarctica, Africa, and the Middle East.

Eclipse details

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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]

February 24, 1933 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1933 February 24 at 09:56:13.4 UTC
First Umbral External Contact 1933 February 24 at 10:57:42.3 UTC
First Central Line 1933 February 24 at 10:58:41.9 UTC
First Umbral Internal Contact 1933 February 24 at 10:59:41.6 UTC
First Penumbral Internal Contact 1933 February 24 at 12:04:02.5 UTC
Equatorial Conjunction 1933 February 24 at 12:34:09.6 UTC
Ecliptic Conjunction 1933 February 24 at 12:44:13.6 UTC
Greatest Eclipse 1933 February 24 at 12:46:39.0 UTC
Last Penumbral Internal Contact 1933 February 24 at 13:29:31.9 UTC
Last Umbral Internal Contact 1933 February 24 at 14:33:42.2 UTC
Greatest Duration 1933 February 24 at 14:34:44.6 UTC
Last Central Line 1933 February 24 at 14:34:44.6 UTC
Last Umbral External Contact 1933 February 24 at 14:35:47.1 UTC
Last Penumbral External Contact 1933 February 24 at 15:37:16.0 UTC
February 24, 1933 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.98411
Eclipse Obscuration 0.96847
Gamma −0.21909
Sun Right Ascension 22h29m09.4s
Sun Declination -09°30'27.0"
Sun Semi-Diameter 16'09.4"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 22h29m32.7s
Moon Declination -09°41'36.6"
Moon Semi-Diameter 15'39.2"
Moon Equatorial Horizontal Parallax 0°57'26.7"
ΔT 23.9 s

Eclipse season

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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.

Eclipse season of February–March 1933
February 10
Descending node (full moon)
February 24
Ascending node (new moon)
March 12
Descending node (full moon)
Penumbral lunar eclipse
Lunar Saros 103
Annular solar eclipse
Solar Saros 129
Penumbral lunar eclipse
Lunar Saros 141
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Eclipses in 1933

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Metonic

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Tzolkinex

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Half-Saros

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Tritos

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Solar Saros 129

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Inex

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Triad

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Solar eclipses of 1931–1935

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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

Saros 129

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This eclipse is a part of Saros series 129, repeating every 18 years, 11 days, and containing 80 events. The series started with a partial solar eclipse on October 3, 1103. It contains annular eclipses from May 6, 1464 through March 18, 1969; hybrid eclipses from March 29, 1987 through April 20, 2023; and total eclipses from April 30, 2041 through July 26, 2185. The series ends at member 80 as a partial eclipse on February 21, 2528. 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 annularity was produced by member 34 at 5 minutes, 10 seconds on October 4, 1698, and the longest duration of totality will be produced by member 58 at 3 minutes, 43 seconds on June 25, 2131. All eclipses in this series occur at the Moon’s ascending node of orbit.[5]

Series members 40–61 occur between 1801 and 2200:
40 41 42

December 10, 1806

December 20, 1824

December 31, 1842
43 44 45

January 11, 1861

January 22, 1879

February 1, 1897
46 47 48

February 14, 1915

February 24, 1933

March 7, 1951
49 50 51

March 18, 1969

March 29, 1987

April 8, 2005
52 53 54

April 20, 2023

April 30, 2041

May 11, 2059
55 56 57

May 22, 2077

June 2, 2095

June 13, 2113
58 59 60

June 25, 2131

July 5, 2149

July 16, 2167
61

July 26, 2185

Metonic series

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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 13, 1898 and July 20, 1982
December 13–14 October 1–2 July 20–21 May 9 February 24–25
111 113 115 117 119

December 13, 1898

July 21, 1906

May 9, 1910

February 25, 1914
121 123 125 127 129

December 14, 1917

October 1, 1921

July 20, 1925

May 9, 1929

February 24, 1933
131 133 135 137 139

December 13, 1936

October 1, 1940

July 20, 1944

May 9, 1948

February 25, 1952
141 143 145 147 149

December 14, 1955

October 2, 1959

July 20, 1963

May 9, 1967

February 25, 1971
151 153 155

December 13, 1974

October 2, 1978

July 20, 1982

Tritos series

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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 4, 1802
(Saros 117)

February 1, 1813
(Saros 118)

January 1, 1824
(Saros 119)

November 30, 1834
(Saros 120)

October 30, 1845
(Saros 121)

September 29, 1856
(Saros 122)

August 29, 1867
(Saros 123)

July 29, 1878
(Saros 124)

June 28, 1889
(Saros 125)

May 28, 1900
(Saros 126)

April 28, 1911
(Saros 127)

March 28, 1922
(Saros 128)

February 24, 1933
(Saros 129)

January 25, 1944
(Saros 130)

December 25, 1954
(Saros 131)

November 23, 1965
(Saros 132)

October 23, 1976
(Saros 133)

September 23, 1987
(Saros 134)

August 22, 1998
(Saros 135)

July 22, 2009
(Saros 136)

June 21, 2020
(Saros 137)

May 21, 2031
(Saros 138)

April 20, 2042
(Saros 139)

March 20, 2053
(Saros 140)

February 17, 2064
(Saros 141)

January 16, 2075
(Saros 142)

December 16, 2085
(Saros 143)

November 15, 2096
(Saros 144)

October 16, 2107
(Saros 145)

September 15, 2118
(Saros 146)

August 15, 2129
(Saros 147)

July 14, 2140
(Saros 148)

June 14, 2151
(Saros 149)

May 14, 2162
(Saros 150)

April 12, 2173
(Saros 151)

March 12, 2184
(Saros 152)

February 10, 2195
(Saros 153)

Inex series

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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 16, 1817
(Saros 125)

April 25, 1846
(Saros 126)

April 6, 1875
(Saros 127)

March 17, 1904
(Saros 128)

February 24, 1933
(Saros 129)

February 5, 1962
(Saros 130)

January 15, 1991
(Saros 131)

December 26, 2019
(Saros 132)

December 5, 2048
(Saros 133)

November 15, 2077
(Saros 134)

October 26, 2106
(Saros 135)

October 7, 2135
(Saros 136)

September 16, 2164
(Saros 137)

August 26, 2193
(Saros 138)

Notes

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  1. ^ "February 24, 1933 Annular Solar Eclipse". timeanddate. Retrieved 3 August 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 3 August 2024.
  3. ^ "Annular Solar Eclipse of 1933 Feb 24". EclipseWise.com. Retrieved 3 August 2024.
  4. ^ 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.
  5. ^ "NASA - Catalog of Solar Eclipses of Saros 129". eclipse.gsfc.nasa.gov.

References

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