A total solar eclipse occurred at the Moon's ascending node of orbit between Thursday, June 17 and Friday, June 18, 1909, with a magnitude of 1.0065. It was a hybrid event, with a long section of its path as total, and smaller sections at the start and end as an annular eclipse. 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 hybrid solar eclipse is a rare type of solar eclipse that changes its appearance from annular to total and back as the Moon's shadow moves across the Earth's surface. Totality occurs between the annularity paths across the surface of the Earth, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. The Moon's apparent diameter was near the average diameter because it occurred 5.4 days after perigee (on June 12, 1909, at 16:00 UTC) and 7.5 days before apogee (on June 25, 1909, at 12:00 UTC).

The path of totality crossed central Russia, the Arctic Ocean, northeastern Ellesmere Island in Canada, Greenland, and annularity crossed southern Siberia in Russia (now in northeastern Kazakhstan and southern Russia) and southern Greenland. A partial eclipse was visible for parts of East Asia and northern North America.

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.

June 17, 1909 Solar Eclipse Times
EventTime (UTC)
First Penumbral External Contact1909 June 17 at 21:00:24.0 UTC
First Umbral External Contact1909 June 17 at 22:30:16.6 UTC
First Central Line1909 June 17 at 22:30:18.7 UTC
First Umbral Internal Contact1909 June 17 at 22:30:20.9 UTC
Greatest Duration1909 June 17 at 23:16:41.2 UTC
Greatest Eclipse1909 June 17 at 23:18:38.1 UTC
Ecliptic Conjunction1909 June 17 at 23:28:20.1 UTC
Equatorial Conjunction1909 June 17 at 23:31:17.2 UTC
Last Umbral Internal Contact1909 June 18 at 00:06:44.2 UTC
Last Central Line1909 June 18 at 00:06:49.2 UTC
Last Umbral External Contact1909 June 18 at 00:06:54.2 UTC
Last Penumbral External Contact1909 June 18 at 01:36:52.5 UTC
June 17, 1909 Solar Eclipse Parameters
ParameterValue
Eclipse Magnitude1.00647
Eclipse Obscuration1.01299
Gamma0.89568
Sun Right Ascension05h42m52.5s
Sun Declination+23°23'35.6"
Sun Semi-Diameter15'44.3"
Sun Equatorial Horizontal Parallax08.7"
Moon Right Ascension05h42m23.6s
Moon Declination+24°14'45.8"
Moon Semi-Diameter15'44.1"
Moon Equatorial Horizontal Parallax0°57'44.9"
ΔT9.7 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 June 1909
June 4 Descending node (full moon)June 17 Ascending node (new moon)
Total lunar eclipse Lunar Saros 119Hybrid solar eclipse Solar Saros 145

Related eclipses

Eclipses in 1909

Metonic

Tzolkinex

Half-Saros

  • Preceded by: Lunar eclipse of June 13, 1900
  • Followed by: Lunar eclipse of June 24, 1918

Tritos

Solar Saros 145

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.

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 nodeDescending node
SarosMapGammaSarosMapGamma
115July 21, 1906 Partial−1.3637120January 14, 1907 Total0.8628
125July 10, 1907 Annular−0.6313130January 3, 1908 Total0.1934
135June 28, 1908 Annular0.1389140December 23, 1908 Hybrid−0.4985
145June 17, 1909 Hybrid0.8957150December 12, 1909 Partial−1.2456

Saros 145

This eclipse is a part of Saros series 145, repeating every 18 years, 11 days, and containing 77 events. The series started with a partial solar eclipse on January 4, 1639. It contains an annular eclipse on June 6, 1891; a hybrid eclipse on June 17, 1909; and total eclipses from June 29, 1927 through September 9, 2648. The series ends at member 77 as a partial eclipse on April 17, 3009. 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 was produced by member 15 at 6 seconds (by default) on June 6, 1891, and the longest duration of totality will be produced by member 50 at 7 minutes, 12 seconds on June 25, 2522. All eclipses in this series occur at the Moon’s ascending node of orbit.

Series members 10–32 occur between 1801 and 2200:
101112
April 13, 1801April 24, 1819May 4, 1837
131415
May 16, 1855May 26, 1873June 6, 1891
161718
June 17, 1909June 29, 1927July 9, 1945
192021
July 20, 1963July 31, 1981August 11, 1999
222324
August 21, 2017September 2, 2035September 12, 2053
252627
September 23, 2071October 4, 2089October 16, 2107
282930
October 26, 2125November 7, 2143November 17, 2161
3132
November 28, 2179December 9, 2197

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 ascending node.

25 eclipse events between April 5, 1837 and June 17, 1928
April 5–6January 22–23November 10–11August 28–30June 17–18
107109111113115
April 5, 1837January 22, 1841November 10, 1844August 28, 1848June 17, 1852
117119121123125
April 5, 1856January 23, 1860November 11, 1863August 29, 1867June 18, 1871
127129131133135
April 6, 1875January 22, 1879November 10, 1882August 29, 1886June 17, 1890
137139141143145
April 6, 1894January 22, 1898November 11, 1901August 30, 1905June 17, 1909
147149151153155
April 6, 1913January 23, 1917November 10, 1920August 30, 1924June 17, 1928

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.

The partial solar eclipse on November 4, 2116 (part of Saros 164) is also a part of this series but is not included in the table below.

Series members between 1801 and 2029
March 24, 1811 (Saros 136)February 21, 1822 (Saros 137)January 20, 1833 (Saros 138)December 21, 1843 (Saros 139)November 20, 1854 (Saros 140)
October 19, 1865 (Saros 141)September 17, 1876 (Saros 142)August 19, 1887 (Saros 143)July 18, 1898 (Saros 144)June 17, 1909 (Saros 145)
May 18, 1920 (Saros 146)April 18, 1931 (Saros 147)March 16, 1942 (Saros 148)February 14, 1953 (Saros 149)January 14, 1964 (Saros 150)
December 13, 1974 (Saros 151)November 12, 1985 (Saros 152)October 12, 1996 (Saros 153)September 11, 2007 (Saros 154)August 11, 2018 (Saros 155)
July 11, 2029 (Saros 156)

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
August 16, 1822 (Saros 142)July 28, 1851 (Saros 143)July 7, 1880 (Saros 144)
June 17, 1909 (Saros 145)May 29, 1938 (Saros 146)May 9, 1967 (Saros 147)
April 17, 1996 (Saros 148)March 29, 2025 (Saros 149)March 9, 2054 (Saros 150)
February 16, 2083 (Saros 151)January 29, 2112 (Saros 152)January 8, 2141 (Saros 153)
December 18, 2169 (Saros 154)November 28, 2198 (Saros 155)

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