Solar eclipse of November 12, 1928

Solar eclipse of November 12, 1928
Map
Type of eclipse
NaturePartial
Gamma1.0861
Magnitude0.8078
Maximum eclipse
Coordinates62°36′N 81°06′E / 62.6°N 81.1°E / 62.6; 81.1
Times (UTC)
Greatest eclipse9:48:24
References
Saros122 (53 of 70)
Catalog # (SE5000)9348

A partial solar eclipse occurred at the Moon's descending node of orbit on Monday, November 12, 1928,[1] with a magnitude of 0.8078. 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 Northeast Africa, Europe, West Asia, Central Asia, and South Asia.

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.[2]

November 12, 1928 Solar Eclipse Times
Event Time (UTC)
First Penumbral External Contact 1928 November 12 at 07:33:47.2 UTC
Equatorial Conjunction 1928 November 12 at 08:58:05.5 UTC
Ecliptic Conjunction 1928 November 12 at 09:35:37.7 UTC
Greatest Eclipse 1928 November 12 at 09:48:24.3 UTC
Last Penumbral External Contact 1928 November 12 at 12:03:24.1 UTC
November 12, 1928 Solar Eclipse Parameters
Parameter Value
Eclipse Magnitude 0.80778
Eclipse Obscuration 0.72803
Gamma 1.08611
Sun Right Ascension 15h09m18.3s
Sun Declination -17°41'18.0"
Sun Semi-Diameter 16'09.8"
Sun Equatorial Horizontal Parallax 08.9"
Moon Right Ascension 15h10m47.3s
Moon Declination -16°46'39.9"
Moon Semi-Diameter 14'44.8"
Moon Equatorial Horizontal Parallax 0°54'07.3"
ΔT 24.1 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.

Eclipse season of November 1928
November 12
Descending node (new moon)
November 27
Ascending node (full moon)
Partial solar eclipse
Solar Saros 122
Total lunar eclipse
Lunar Saros 134

Eclipses in 1928

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 122

Inex

Triad

Solar eclipses of 1928–1931

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 eclipse on June 17, 1928 occurs in the previous lunar year eclipse set, and the partial solar eclipse on September 12, 1931 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 1928 to 1931
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
117 May 19, 1928

Total (non-central)
1.0048 122 November 12, 1928

Partial
1.0861
127 May 9, 1929

Total
−0.2887 132 November 1, 1929

Annular
0.3514
137 April 28, 1930

Hybrid
0.473 142 October 21, 1930

Total
−0.3804
147 April 18, 1931

Partial
1.2643 152 October 11, 1931

Partial
−1.0607

Saros 122

This eclipse is a part of Saros series 122, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on April 17, 991 AD. It contains total eclipses from July 12, 1135 through August 3, 1171; hybrid eclipses on August 13, 1189 and August 25, 1207; and annular eclipses from September 4, 1225 through October 10, 1874. The series ends at member 70 as a partial eclipse on May 17, 2235. 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 9 at 1 minutes, 25 seconds on July 12, 1135, and the longest duration of annularity was produced by member 50 at 6 minutes, 28 seconds on October 10, 1874. All eclipses in this series occur at the Moon’s descending node of orbit.[4]

Series members 46–68 occur between 1801 and 2200:
46 47 48

August 28, 1802

September 7, 1820

September 18, 1838
49 50 51

September 29, 1856

October 10, 1874

October 20, 1892
52 53 54

November 2, 1910

November 12, 1928

November 23, 1946
55 56 57

December 4, 1964

December 15, 1982

December 25, 2000
58 59 60

January 6, 2019

January 16, 2037

January 27, 2055
61 62 63

February 7, 2073

February 18, 2091

March 1, 2109
64 65 66

March 13, 2127

March 23, 2145

April 3, 2163
67 68

April 14, 2181

April 25, 2199

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 April 8, 1902 and August 31, 1989
April 7–8 January 24–25 November 12 August 31–September 1 June 19–20
108 110 112 114 116

April 8, 1902

August 31, 1913

June 19, 1917
118 120 122 124 126

April 8, 1921

January 24, 1925

November 12, 1928

August 31, 1932

June 19, 1936
128 130 132 134 136

April 7, 1940

January 25, 1944

November 12, 1947

September 1, 1951

June 20, 1955
138 140 142 144 146

April 8, 1959

January 25, 1963

November 12, 1966

August 31, 1970

June 20, 1974
148 150 152 154

April 7, 1978

January 25, 1982

November 12, 1985

August 31, 1989

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.

Series members between 1801 and 2200

October 19, 1808
(Saros 111)

September 19, 1819
(Saros 112)

August 18, 1830
(Saros 113)

July 18, 1841
(Saros 114)

June 17, 1852
(Saros 115)

May 17, 1863
(Saros 116)

April 16, 1874
(Saros 117)

March 16, 1885
(Saros 118)

February 13, 1896
(Saros 119)

January 14, 1907
(Saros 120)

December 14, 1917
(Saros 121)

November 12, 1928
(Saros 122)

October 12, 1939
(Saros 123)

September 12, 1950
(Saros 124)

August 11, 1961
(Saros 125)

July 10, 1972
(Saros 126)

June 11, 1983
(Saros 127)

May 10, 1994
(Saros 128)

April 8, 2005
(Saros 129)

March 9, 2016
(Saros 130)

February 6, 2027
(Saros 131)

January 5, 2038
(Saros 132)

December 5, 2048
(Saros 133)

November 5, 2059
(Saros 134)

October 4, 2070
(Saros 135)

September 3, 2081
(Saros 136)

August 3, 2092
(Saros 137)

July 4, 2103
(Saros 138)

June 3, 2114
(Saros 139)

May 3, 2125
(Saros 140)

April 1, 2136
(Saros 141)

March 2, 2147
(Saros 142)

January 30, 2158
(Saros 143)

December 29, 2168
(Saros 144)

November 28, 2179
(Saros 145)

October 29, 2190
(Saros 146)

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

February 1, 1813
(Saros 118)

January 11, 1842
(Saros 119)

December 22, 1870
(Saros 120)

December 3, 1899
(Saros 121)

November 12, 1928
(Saros 122)

October 23, 1957
(Saros 123)

October 3, 1986
(Saros 124)

September 13, 2015
(Saros 125)

August 23, 2044
(Saros 126)

August 3, 2073
(Saros 127)

July 15, 2102
(Saros 128)

June 25, 2131
(Saros 129)

June 4, 2160
(Saros 130)

May 15, 2189
(Saros 131)

References

  1. ^ "November 12, 1928 Partial Solar Eclipse". timeanddate. Retrieved 3 August 2024.
  2. ^ "Partial Solar Eclipse of 1928 Nov 12". 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 122". eclipse.gsfc.nasa.gov.