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Solar eclipse of March 28, 1922

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Solar eclipse of March 28, 1922
Map
Type of eclipse
NatureAnnular
Gamma0.1711
Magnitude0.9381
Maximum eclipse
Duration470 s (7 min 50 s)
Coordinates12°18′N 18°00′W / 12.3°N 18°W / 12.3; -18
Max. width of band233 km (145 mi)
Times (UTC)
Greatest eclipse13:05:26
References
Saros128 (53 of 73)
Catalog # (SE5000)9332

An annular solar eclipse occurred at the Moon's descending node of orbit on Tuesday, March 28, 1922,[1] with a magnitude of 0.9381. 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 2.75 days after apogee (on March 25, 1922, at 19:30 UTC), the Moon's apparent diameter was smaller.[2]

Annularity was visible from Peru, Brazil, French West Africa (parts now belonging to Senegal, Mauritania and Mali), British Gambia (today's Gambia) including capital Banjul, French Algeria (today's Algeria), Italian Libya (today's Libya), Egypt, Kingdom of Hejaz and Sultanate of Nejd (now belonging to Saudi Arabia), and British Kuwait. A partial eclipse was visible for parts of South America, the Caribbean, North Africa, Central Africa, Europe, 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]

March 28, 1922 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1922 March 28 at 10:01:22.5 UTC
First Umbral External Contact 1922 March 28 at 11:06:26.9 UTC
First Central Line 1922 March 28 at 11:09:09.9 UTC
First Umbral Internal Contact 1922 March 28 at 11:11:53.0 UTC
First Penumbral Internal Contact 1922 March 28 at 12:18:44.5 UTC
Ecliptic Conjunction 1922 March 28 at 13:03:23.4 UTC
Greatest Eclipse 1922 March 28 at 13:05:25.8 UTC
Greatest Duration 1922 March 28 at 13:06:46.6 UTC
Equatorial Conjunction 1922 March 28 at 13:11:48.1 UTC
Last Penumbral Internal Contact 1922 March 28 at 13:51:56.9 UTC
Last Umbral Internal Contact 1922 March 28 at 14:58:55.1 UTC
Last Central Line 1922 March 28 at 15:01:36.7 UTC
Last Umbral External Contact 1922 March 28 at 15:04:18.1 UTC
Last Penumbral External Contact 1922 March 28 at 16:09:22.4 UTC
March 28, 1922 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.93810
Eclipse Obscuration 0.88002
Gamma 0.17106
Sun Right Ascension 00h25m58.2s
Sun Declination +02°48'27.5"
Sun Semi-Diameter 16'01.1"
Sun Equatorial Horizontal Parallax 08.8"
Moon Right Ascension 00h25m47.1s
Moon Declination +02°57'17.9"
Moon Semi-Diameter 14'48.3"
Moon Equatorial Horizontal Parallax 0°54'20.0"
ΔT 22.5 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 March–April 1922
March 13
Ascending node (full moon)
March 28
Descending node (new moon)
April 11
Ascending node (full moon)
Penumbral lunar eclipse
Lunar Saros 102
Annular solar eclipse
Solar Saros 128
Penumbral lunar eclipse
Lunar Saros 140
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Eclipses in 1922

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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 128

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Inex

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Triad

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Solar eclipses of 1921–1924

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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 eclipse on July 31, 1924 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 1921 to 1924
Descending node   Ascending node
Saros Map Gamma Saros Map Gamma
118 April 8, 1921

Annular
0.8869 123 October 1, 1921

Total
−0.9383
128 March 28, 1922

Annular
0.1711 133 September 21, 1922

Total
−0.213
138 March 17, 1923

Annular
−0.5438 143 September 10, 1923

Total
0.5149
148 March 5, 1924

Partial
−1.2232 153 August 30, 1924

Partial
1.3123

Saros 128

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This eclipse is a part of Saros series 128, repeating every 18 years, 11 days, and containing 73 events. The series started with a partial solar eclipse on August 29, 984 AD. It contains total eclipses from May 16, 1417 through June 18, 1471; hybrid eclipses from June 28, 1489 through July 31, 1543; and annular eclipses from August 11, 1561 through July 25, 2120. The series ends at member 73 as a partial eclipse on November 1, 2282. 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 27 at 1 minutes, 45 seconds on June 7, 1453, and the longest duration of annularity was produced by member 48 at 8 minutes, 35 seconds on February 1, 1832. All eclipses in this series occur at the Moon’s descending node of orbit.[5]

Series members 47–68 occur between 1801 and 2200:
47 48 49

January 21, 1814

February 1, 1832

February 12, 1850
50 51 52

February 23, 1868

March 5, 1886

March 17, 1904
53 54 55

March 28, 1922

April 7, 1940

April 19, 1958
56 57 58

April 29, 1976

May 10, 1994

May 20, 2012
59 60 61

June 1, 2030

June 11, 2048

June 22, 2066
62 63 64

July 3, 2084

July 15, 2102

July 25, 2120
65 66 67

August 5, 2138

August 16, 2156

August 27, 2174
68

September 6, 2192

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.

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

June 16, 1806
(Saros 124)

May 27, 1835
(Saros 125)

May 6, 1864
(Saros 126)

April 16, 1893
(Saros 127)

March 28, 1922
(Saros 128)

March 7, 1951
(Saros 129)

February 16, 1980
(Saros 130)

January 26, 2009
(Saros 131)

January 5, 2038
(Saros 132)

December 17, 2066
(Saros 133)

November 27, 2095
(Saros 134)

November 6, 2124
(Saros 135)

October 17, 2153
(Saros 136)

September 27, 2182
(Saros 137)

Notes

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  1. ^ "March 28, 1922 Annular Solar Eclipse". timeanddate. Retrieved 2 August 2024.
  2. ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 2 August 2024.
  3. ^ "Annular Solar Eclipse of 1922 Mar 28". EclipseWise.com. Retrieved 2 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 128". eclipse.gsfc.nasa.gov.

References

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