Solar eclipse of December 12, 1909

Last updated
Solar eclipse of December 12, 1909
Partial eclipse
SE1909Dec12P.png
Map
Gamma −1.2456
Magnitude 0.5424
Maximum eclipse
Coordinates 65°S86°E / 65°S 86°E / -65; 86
Times (UTC)
Greatest eclipse19:44:48
References
Saros 150 (11 of 71)
Catalog # (SE5000) 9303

A partial solar eclipse occurred at the Moon's descending node of orbit on Sunday, December 12, 1909, [1] [2] [3] with a magnitude of 0.5424. 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.

Contents

This event was visible as a partial solar eclipse across Antarctica and New Zealand.

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. [4]

December 12, 1909 Solar Eclipse Times
EventTime (UTC)
First Penumbral External Contact1909 December 12 at 17:56:19.6 UTC
Greatest Eclipse1909 December 12 at 19:44:48.1 UTC
Ecliptic Conjunction1909 December 12 at 19:58:40.0 UTC
Equatorial Conjunction1909 December 12 at 20:09:23.5 UTC
Last Penumbral External Contact1909 December 12 at 21:33:01.1 UTC
December 12, 1909 Solar Eclipse Parameters
ParameterValue
Eclipse Magnitude0.54243
Eclipse Obscuration0.42921
Gamma–1.24559
Sun Right Ascension17h17m14.6s
Sun Declination-23°05'16.7"
Sun Semi-Diameter16'14.8"
Sun Equatorial Horizontal Parallax08.9"
Moon Right Ascension17h16m22.9s
Moon Declination-24°13'34.7"
Moon Semi-Diameter15'12.2"
Moon Equatorial Horizontal Parallax0°55'47.8"
ΔT10.4 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–December 1909
November 27
Ascending node (full moon)
December 12
Descending node (new moon)
Lunar eclipse chart close-1909Nov27.png SE1909Dec12P.png
Penumbral lunar eclipse
Lunar Saros 124
Annular solar eclipse
Solar Saros 150

Eclipses in 1909

Metonic

Tzolkinex

Half-Saros

Tritos

Solar Saros 150

Inex

Triad

Solar eclipses of 1906–1909

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 February 23, 1906 and August 20, 1906 occur in the previous lunar year eclipse set.

Solar eclipse series sets from 1906 to 1909
Ascending node Descending node
SarosMapGammaSarosMapGamma
115 July 21, 1906
SE1906Jul21P.png
Partial
−1.3637120 January 14, 1907
SE1907Jan14T.png
Total
0.8628
125 July 10, 1907
SE1907Jul10A.png
Annular
−0.6313130 January 3, 1908
SE1908Jan03T.png
Total
0.1934
135 June 28, 1908
SE1908Jun28A.png
Annular
0.1389140 December 23, 1908
SE1908Dec23H.png
Hybrid
−0.4985
145 June 17, 1909
SE1909Jun17H.png
Hybrid
0.8957150 December 12, 1909
SE1909Dec12P.png
Partial
−1.2456

Saros 150

This eclipse is a part of Saros series 150, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on August 24, 1729. It contains annular eclipses from April 22, 2126 through June 22, 2829. There are no hybrid or total eclipses in this set. The series ends at member 71 as a partial eclipse on September 29, 2991. 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 will be produced by member 45 at 9 minutes, 58 seconds on December 19, 2522. All eclipses in this series occur at the Moon’s descending node of orbit. [6]

Series members 5–27 occur between 1801 and 2200:
567
SE1801Oct07P.png
October 7, 1801
SE1819Oct19P.gif
October 19, 1819
SE1837Oct29P.gif
October 29, 1837
8910
SE1855Nov09P.gif
November 9, 1855
SE1873Nov20P.gif
November 20, 1873
SE1891Dec01P.gif
December 1, 1891
111213
SE1909Dec12P.png
December 12, 1909
SE1927Dec24P.png
December 24, 1927
SE1946Jan03P.png
January 3, 1946
141516
SE1964Jan14P.png
January 14, 1964
SE1982Jan25P.png
January 25, 1982
SE2000Feb05P.png
February 5, 2000
171819
SE2018Feb15P.png
February 15, 2018
SE2036Feb27P.png
February 27, 2036
SE2054Mar09P.png
March 9, 2054
202122
SE2072Mar19P.png
March 19, 2072
SE2090Mar31P.png
March 31, 2090
SE2108Apr11P.gif
April 11, 2108
232425
Saros150 23van71 SE2126Apr22A.jpg
April 22, 2126
Saros150 24van71 SE2144May03A.jpg
May 3, 2144
Saros150 25van71 SE2162May14A.jpg
May 14, 2162
2627
Saros150 26van71 SE2180May24A.jpg
May 24, 2180
Saros150 27van71 SE2198Jun04A.jpg
June 4, 2198

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 February 23, 1830 and July 19, 1917
February 22–23December 11–12September 29–30July 18–19May 6–7
108110112114116
SE1830Feb23P.gif
February 23, 1830
SE1841Jul18P.gif
July 18, 1841
Saros116 63van70 SE1845May06A.jpg
May 6, 1845
118120122124126
SE1849Feb23A.gif
February 23, 1849
SE1852Dec11T.gif
December 11, 1852
SE1856Sep29A.gif
September 29, 1856
SE1860Jul18T.gif
July 18, 1860
SE1864May06H.gif
May 6, 1864
128130132134136
SE1868Feb23A.gif
February 23, 1868
SE1871Dec12T.gif
December 12, 1871
SE1875Sep29A.gif
September 29, 1875
SE1879Jul19A.png
July 19, 1879
SE1883May06T.png
May 6, 1883
138140142144146
SE1887Feb22A.png
February 22, 1887
SE1890Dec12H.gif
December 12, 1890
SE1894Sep29T.gif
September 29, 1894
SE1898Jul18A.gif
July 18, 1898
SE1902May07P.png
May 7, 1902
148150152154
SE1906Feb23P.png
February 23, 1906
SE1909Dec12P.png
December 12, 1909
SE1913Sep30P.png
September 30, 1913
SE1917Jul19P.png
July 19, 1917

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 1964
SE1811Sep17A.gif
September 17, 1811
(Saros 141)
SE1822Aug16T.gif
August 16, 1822
(Saros 142)
SE1833Jul17T.gif
July 17, 1833
(Saros 143)
SE1844Jun16P.gif
June 16, 1844
(Saros 144)
SE1855May16P.gif
May 16, 1855
(Saros 145)
SE1866Apr15P.gif
April 15, 1866
(Saros 146)
SE1877Mar15P.gif
March 15, 1877
(Saros 147)
SE1888Feb11P.gif
February 11, 1888
(Saros 148)
SE1899Jan11P.gif
January 11, 1899
(Saros 149)
SE1909Dec12P.png
December 12, 1909
(Saros 150)
SE1920Nov10P.png
November 10, 1920
(Saros 151)
SE1931Oct11P.png
October 11, 1931
(Saros 152)
SE1942Sep10P.png
September 10, 1942
(Saros 153)
SE1953Aug09P.png
August 9, 1953
(Saros 154)
SE1964Jul09P.png
July 9, 1964
(Saros 155)

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
SE1823Feb11P.gif
February 11, 1823
(Saros 147)
SE1852Jan21P.png
January 21, 1852
(Saros 148)
SE1880Dec31P.gif
December 31, 1880
(Saros 149)
SE1909Dec12P.png
December 12, 1909
(Saros 150)
SE1938Nov21P.png
November 21, 1938
(Saros 151)
SE1967Nov02T.png
November 2, 1967
(Saros 152)
SE1996Oct12P.png
October 12, 1996
(Saros 153)
SE2025Sep21P.png
September 21, 2025
(Saros 154)
SE2054Sep02P.png
September 2, 2054
(Saros 155)
SE2083Aug13P.png
August 13, 2083
(Saros 156)
Saros157 04van70 SE2112Jul23P.jpg
July 23, 2112
(Saros 157)
Saros158 05van70 SE2141Jul03P.jpg
July 3, 2141
(Saros 158)
Saros159 03van70 SE2170Jun14P.jpg
June 14, 2170
(Saros 159)
Saros160 02van71 SE2199May24P.jpg
May 24, 2199
(Saros 160)

References

  1. "December 12, 1909 Partial Solar Eclipse". timeanddate. Retrieved 31 July 2024.
  2. "Partial eclipse of the sun". Columbia Missourian. Columbia, Missouri. 1909-12-13. p. 1. Retrieved 2023-11-01 via Newspapers.com.
  3. "Eclipse of the Sun". Whittier Daily News. Whittier, California. 1909-12-13. p. 2. Retrieved 2023-11-01 via Newspapers.com.
  4. "Partial Solar Eclipse of 1909 Dec 12". EclipseWise.com. Retrieved 31 July 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 150". eclipse.gsfc.nasa.gov.