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Solar eclipse of June 17, 1928

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Solar eclipse of June 17, 1928
Map
Type of eclipse
NaturePartial
Gamma1.5107
Magnitude0.0375
Maximum eclipse
Coordinates65°36′N 70°36′E / 65.6°N 70.6°E / 65.6; 70.6
Times (UTC)
Greatest eclipse20:27:28
References
Saros155 (1 of 71)
Catalog # (SE5000)9346

A partial solar eclipse occurred at the Moon's ascending node of orbit on Sunday, June 17, 1928,[1] with a magnitude of 0.0375. 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 partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.

A partial eclipse was visible for parts of the northern Soviet Union. This is the 1st solar eclipse of Solar Saros 155, and this is the next saros cycle to begin after the partial solar eclipse of July 19, 1917 (part of Solar Saros 154).

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.[2]

June 17, 1928 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1928 June 17 at 20:02:02.9 UTC
Greatest Eclipse 1928 June 17 at 20:27:28.2 UTC
Ecliptic Conjunction 1928 June 17 at 20:42:22.7 UTC
Equatorial Conjunction 1928 June 17 at 20:46:44.4 UTC
Last Penumbral External Contact 1928 June 17 at 20:52:47.3 UTC
June 17, 1928 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.03756
Eclipse Obscuration 0.00879
Gamma 1.51070
Sun Right Ascension 05h44m06.5s
Sun Declination +23°23'56.5"
Sun Semi-Diameter 15'44.4"
Sun Equatorial Horizontal Parallax 08.7"
Moon Right Ascension 05h43m17.3s
Moon Declination +24°54'44.1"
Moon Semi-Diameter 16'32.3"
Moon Equatorial Horizontal Parallax 1°00'41.9"
ΔT 24.2 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 May–June 1928
May 19
Ascending node (new moon)
June 3
Descending node (full moon)
June 17
Ascending node (new moon)
Total solar eclipse
Solar Saros 117
Total lunar eclipse
Lunar Saros 129
Partial solar eclipse
Solar Saros 155
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Eclipses in 1928

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Metonic

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Tzolkinex

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Tritos

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Solar Saros 155

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Triad

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Solar eclipses of 1924–1928

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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.[3]

The partial solar eclipses on March 5, 1924 and August 30, 1924 occur in the previous lunar year eclipse set, and the solar eclipses on May 19, 1928 and November 12, 1928 occur in the next lunar year eclipse set.

Solar eclipse series sets from 1924 to 1928
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
115 July 31, 1924

Partial
−1.4459 120 January 24, 1925

Total
0.8661
125 July 20, 1925

Annular
−0.7193 130

Totality in Sumatra, Indonesia
January 14, 1926

Total
0.1973
135 July 9, 1926

Annular
0.0538 140 January 3, 1927

Annular
−0.4956
145 June 29, 1927

Total
0.8163 150 December 24, 1927

Partial
−1.2416
155 June 17, 1928

Partial
1.5107

Saros 155

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This eclipse is a part of Saros series 155, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on June 17, 1928. It contains total eclipses from September 12, 2072 through August 30, 2649; hybrid eclipses from September 10, 2667 through October 2, 2703; and annular eclipses from October 13, 2721 through May 8, 3064. The series ends at member 71 as a partial eclipse on July 24, 3190. 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 14 at 4 minutes, 5 seconds on November 6, 2162, and the longest duration of annularity will be produced by member 63 at 5 minutes, 31 seconds on April 28, 3046. All eclipses in this series occur at the Moon’s ascending node of orbit.[4]

Series members 1–16 occur between 1928 and 2200:
1 2 3

June 17, 1928

June 29, 1946

July 9, 1964
4 5 6

July 20, 1982

July 31, 2000

August 11, 2018
7 8 9

August 21, 2036

September 2, 2054

September 12, 2072
10 11 12

September 23, 2090

October 5, 2108

October 16, 2126
13 14 15

October 26, 2144

November 7, 2162

November 17, 2180
16

November 28, 2198

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.

25 eclipse events between April 5, 1837 and June 17, 1928
April 5–6 January 22–23 November 10–11 August 28–30 June 17–18
107 109 111 113 115

April 5, 1837

January 22, 1841

November 10, 1844

August 28, 1848

June 17, 1852
117 119 121 123 125

April 5, 1856

January 23, 1860

November 11, 1863

August 29, 1867

June 18, 1871
127 129 131 133 135

April 6, 1875

January 22, 1879

November 10, 1882

August 29, 1886

June 17, 1890
137 139 141 143 145

April 6, 1894

January 22, 1898

November 11, 1901

August 30, 1905

June 17, 1909
147 149 151 153 155

April 6, 1913

January 23, 1917

November 10, 1920

August 30, 1924

June 17, 1928

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 1928

May 25, 1808
(Saros 144)

April 24, 1819
(Saros 145)

March 24, 1830
(Saros 146)

February 21, 1841
(Saros 147)

January 21, 1852
(Saros 148)

December 21, 1862
(Saros 149)

November 20, 1873
(Saros 150)

October 19, 1884
(Saros 151)

September 18, 1895
(Saros 152)

August 20, 1906
(Saros 153)

July 19, 1917
(Saros 154)

June 17, 1928
(Saros 155)

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.

The partial solar eclipse on December 18, 2188 (part of Saros 164) is also a part of this series but is not included in the table below.

Series members between 1801 and 1928

September 5, 1812
(Saros 151)

August 16, 1841
(Saros 152)

July 28, 1870
(Saros 153)

June 17, 1928
(Saros 155)

References

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  1. ^ "June 17, 1928 Partial Solar Eclipse". timeanddate. Retrieved 3 August 2024.
  2. ^ "Partial Solar Eclipse of 1928 Jun 17". EclipseWise.com. Retrieved 3 August 2024.
  3. ^ 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.
  4. ^ "NASA - Catalog of Solar Eclipses of Saros 155". eclipse.gsfc.nasa.gov.
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