A partial solar eclipse occurred at the Moon's ascending node of orbit between Sunday, August 19 and Monday, August 20, 1906, with a magnitude of 0.3147. 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 Northern Russia, Alaska, Western Canada, and the Pacific Northwest.

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.

August 20, 1906 Solar Eclipse Times
EventTime (UTC)
First Penumbral External Contact1906 August 19 at 23:53:11.5 UTC
Equatorial Conjunction1906 August 20 at 00:33:41.7 UTC
Greatest Eclipse1906 August 20 at 01:12:49.6 UTC
Ecliptic Conjunction1906 August 20 at 01:27:22.8 UTC
Last Penumbral External Contact1906 August 20 at 02:32:40.9 UTC
August 20, 1906 Solar Eclipse Parameters
ParameterValue
Eclipse Magnitude0.31473
Eclipse Obscuration0.20068
Gamma1.37306
Sun Right Ascension09h53m24.2s
Sun Declination+12°49'20.8"
Sun Semi-Diameter15'48.5"
Sun Equatorial Horizontal Parallax08.7"
Moon Right Ascension09h54m44.1s
Moon Declination+14°05'01.4"
Moon Semi-Diameter15'32.6"
Moon Equatorial Horizontal Parallax0°57'02.8"
ΔT5.8 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. The first and last eclipse in this sequence is separated by one synodic month.

Eclipse season of July−August 1906
July 21 Ascending node (new moon)August 4 Descending node (full moon)August 20 Ascending node (new moon)
Partial solar eclipse Solar Saros 115Total lunar eclipse Lunar Saros 127Partial solar eclipse Solar Saros 153

Related eclipses

Eclipses in 1906

Metonic

Tzolkinex

Half-Saros

  • Preceded by: Lunar eclipse of August 12, 1897
  • Followed by: Lunar eclipse of August 24, 1915

Tritos

Solar Saros 153

Inex

Triad

Solar eclipses of 1902–1906

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 May 7, 1902 and October 31, 1902 occur in the previous lunar year eclipse set, and the partial solar eclipse on July 21, 1906 occurs in the next lunar year eclipse set.

Solar eclipse series sets from 1902 to 1906
Descending nodeAscending node
SarosMapGammaSarosMapGamma
108April 8, 1902 Partial1.5024113October 1, 1902
118March 29, 1903 Annular0.8413123September 21, 1903 Total−0.8967
128March 17, 1904 Annular0.1299133September 9, 1904 Total−0.1625
138March 6, 1905 Annular−0.5768143August 30, 1905 Total0.5708
148February 23, 1906 Partial−1.2479153August 20, 1906 Partial1.3731

Saros 153

This eclipse is a part of Saros series 153, repeating every 18 years, 11 days, and containing 70 events. The series started with a partial solar eclipse on July 28, 1870. It contains annular eclipses from December 17, 2104 through May 26, 2970. There are no hybrid or total eclipses in this set. The series ends at member 70 as a partial eclipse on August 22, 3114. 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 38 at 7 minutes, 1 seconds on September 5, 2537. All eclipses in this series occur at the Moon’s ascending node of orbit.

Series members 1–19 occur between 1870 and 2200:
123
July 28, 1870August 7, 1888August 20, 1906
456
August 30, 1924September 10, 1942September 20, 1960
789
October 2, 1978October 12, 1996October 23, 2014
101112
November 3, 2032November 14, 2050November 24, 2068
131415
December 6, 2086December 17, 2104December 28, 2122
161718
January 8, 2141January 19, 2159January 29, 2177
19
February 10, 2195

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.

24 eclipse events between March 25, 1819 and August 20, 1906
March 25–26January 11–12October 30–31August 18–20June 6–7
107109111113115
March 25, 1819January 12, 1823October 31, 1826August 18, 1830June 7, 1834
117119121123125
March 25, 1838January 11, 1842October 30, 1845August 18, 1849June 6, 1853
127129131133135
March 25, 1857January 11, 1861October 30, 1864August 18, 1868June 6, 1872
137139141143145
March 25, 1876January 11, 1880October 30, 1883August 19, 1887June 6, 1891
147149151153
March 26, 1895January 11, 1899October 31, 1902August 20, 1906

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 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

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 1964
October 19, 1819 (Saros 150)September 27, 1848 (Saros 151)September 7, 1877 (Saros 152)
August 20, 1906 (Saros 153)July 30, 1935 (Saros 154)July 9, 1964 (Saros 155)

Notes

External links