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Solar eclipse of November 1, 1948

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Solar eclipse of November 1, 1948
Map
Type of eclipse
NatureTotal
Gamma−0.3517
Magnitude1.0231
Maximum eclipse
Duration116 s (1 min 56 s)
Coordinates33°06′S 76°12′E / 33.1°S 76.2°E / -33.1; 76.2
Max. width of band84 km (52 mi)
Times (UTC)
Greatest eclipse5:59:18
References
Saros142 (19 of 72)
Catalog # (SE5000)9395

A total solar eclipse occurred at the Moon's descending node of orbit on Monday, November 1, 1948,[1] with a magnitude of 1.0231. 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 2.4 days after perigee (on October 29, 1948, at 21:20 UTC), the Moon's apparent diameter was larger.[2]

Totality was visible from Belgian Congo (today's DR Congo), Uganda Protectorate (today's Uganda) including the capital city Kampala, British Kenya (today's Kenya) including the capital city Nairobi, British Seychelles (today's Seychelles), and British Mauritius (today's Mauritius). A partial eclipse was visible for parts of East Africa, Southern Africa, Antarctica, and Australia.

During this eclipse, comet C/1948 V1, also known as the Eclipse Comet of 1948, was discovered shining near the Sun.[3]

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.[4]

November 1, 1948 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1948 November 01 at 03:19:27.1 UTC
First Umbral External Contact 1948 November 01 at 04:19:32.4 UTC
First Central Line 1948 November 01 at 04:19:46.0 UTC
First Umbral Internal Contact 1948 November 01 at 04:19:59.5 UTC
First Penumbral Internal Contact 1948 November 01 at 05:28:35.7 UTC
Greatest Eclipse 1948 November 01 at 05:59:17.9 UTC
Greatest Duration 1948 November 01 at 06:00:10.8 UTC
Ecliptic Conjunction 1948 November 01 at 06:03:01.1 UTC
Equatorial Conjunction 1948 November 01 at 06:16:14.5 UTC
Last Penumbral Internal Contact 1948 November 01 at 06:29:35.7 UTC
Last Umbral Internal Contact 1948 November 01 at 07:38:28.6 UTC
Last Central Line 1948 November 01 at 07:38:39.8 UTC
Last Umbral External Contact 1948 November 01 at 07:38:51.1 UTC
Last Penumbral External Contact 1948 November 01 at 08:39:07.0 UTC
November 1, 1948 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 1.02312
Eclipse Obscuration 1.04677
Gamma −0.35172
Sun Right Ascension 14h25m22.0s
Sun Declination -14°24'53.4"
Sun Semi-Diameter 16'07.1"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 14h24m46.3s
Moon Declination -14°43'55.8"
Moon Semi-Diameter 16'14.2"
Moon Equatorial Horizontal Parallax 0°59'35.3"
ΔT 28.6 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.

Eclipse season of October–November 1948
October 18
Ascending node (full moon)
November 1
Descending node (new moon)
Penumbral lunar eclipse
Lunar Saros 116
Total solar eclipse
Solar Saros 142
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Eclipses in 1948

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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 142

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Inex

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Triad

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Solar eclipses of 1946–1949

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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.[5]

The partial solar eclipses on January 3, 1946 and June 29, 1946 occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1946 to 1949
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
117 May 30, 1946

Partial
−1.0711 122 November 23, 1946

Partial
1.105
127 May 20, 1947

Total
−0.3528 132 November 12, 1947

Annular
0.3743
137 May 9, 1948

Annular
0.4133 142 November 1, 1948

Total
−0.3517
147 April 28, 1949

Partial
1.2068 152 October 21, 1949

Partial
−1.027

Saros 142

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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.[6]

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

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 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

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.

The partial solar eclipses on December 18, 2188 (part of Saros 164) and November 18, 2199 (part of Saros 165) are also a part of this series but are not included in the table below.

Series members between 1801 and 2134

December 10, 1806
(Saros 129)

November 9, 1817
(Saros 130)

October 9, 1828
(Saros 131)

September 7, 1839
(Saros 132)

August 7, 1850
(Saros 133)

July 8, 1861
(Saros 134)

June 6, 1872
(Saros 135)

May 6, 1883
(Saros 136)

April 6, 1894
(Saros 137)

March 6, 1905
(Saros 138)

February 3, 1916
(Saros 139)

January 3, 1927
(Saros 140)

December 2, 1937
(Saros 141)

November 1, 1948
(Saros 142)

October 2, 1959
(Saros 143)

August 31, 1970
(Saros 144)

July 31, 1981
(Saros 145)

June 30, 1992
(Saros 146)

May 31, 2003
(Saros 147)

April 29, 2014
(Saros 148)

March 29, 2025
(Saros 149)

February 27, 2036
(Saros 150)

January 26, 2047
(Saros 151)

December 26, 2057
(Saros 152)

November 24, 2068
(Saros 153)

October 24, 2079
(Saros 154)

September 23, 2090
(Saros 155)

August 24, 2101
(Saros 156)

July 23, 2112
(Saros 157)

June 23, 2123
(Saros 158)

May 23, 2134
(Saros 159)

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

February 11, 1804
(Saros 137)

January 20, 1833
(Saros 138)

December 31, 1861
(Saros 139)

December 12, 1890
(Saros 140)

November 22, 1919
(Saros 141)

November 1, 1948
(Saros 142)

October 12, 1977
(Saros 143)

September 22, 2006
(Saros 144)

September 2, 2035
(Saros 145)

August 12, 2064
(Saros 146)

July 23, 2093
(Saros 147)

July 4, 2122
(Saros 148)

June 14, 2151
(Saros 149)

May 24, 2180
(Saros 150)

Notes

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  1. ^ "November 1, 1948 Total Solar Eclipse". timeanddate. Retrieved 4 August 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 4 August 2024.
  3. ^ Bortle, John E. "The Bright-Comet Chronicles". International Comet Quarterly. Retrieved 20 February 2013.
  4. ^ "Total Solar Eclipse of 1948 Nov 01". EclipseWise.com. Retrieved 4 August 2024.
  5. ^ 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.
  6. ^ "NASA - Catalog of Solar Eclipses of Saros 142". eclipse.gsfc.nasa.gov.

References

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