Solar eclipse of March 28, 1922 | |
---|---|
Type of eclipse | |
Nature | Annular |
Gamma | 0.1711 |
Magnitude | 0.9381 |
Maximum eclipse | |
Duration | 470 s (7 min 50 s) |
Coordinates | 12°18′N18°00′W / 12.3°N 18°W |
Max. width of band | 233 km (145 mi) |
Times (UTC) | |
Greatest eclipse | 13:05:26 |
References | |
Saros | 128 (53 of 73) |
Catalog # (SE5000) | 9332 |
An annular solar eclipse occurred at the Moon's descending node of orbit on Tuesday, March 28, 1922, [1] with a magnitude of 0.9381. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 2.75 days after apogee (on March 25, 1922, at 19:30 UTC), the Moon's apparent diameter was smaller. [2]
Annularity was visible from Peru, Brazil, French West Africa (parts now belonging to Senegal, Mauritania and Mali), British Gambia (today's Gambia) including capital Banjul, French Algeria (today's Algeria), Italian Libya (today's Libya), Egypt, Kingdom of Hejaz and Sultanate of Nejd (now belonging to Saudi Arabia), and British Kuwait. A partial eclipse was visible for parts of South America, the Caribbean, North Africa, Central Africa, Europe, and the Middle East.
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. [3]
Event | Time (UTC) |
---|---|
First Penumbral External Contact | 1922 March 28 at 10:01:22.5 UTC |
First Umbral External Contact | 1922 March 28 at 11:06:26.9 UTC |
First Central Line | 1922 March 28 at 11:09:09.9 UTC |
First Umbral Internal Contact | 1922 March 28 at 11:11:53.0 UTC |
First Penumbral Internal Contact | 1922 March 28 at 12:18:44.5 UTC |
Ecliptic Conjunction | 1922 March 28 at 13:03:23.4 UTC |
Greatest Eclipse | 1922 March 28 at 13:05:25.8 UTC |
Greatest Duration | 1922 March 28 at 13:06:46.6 UTC |
Equatorial Conjunction | 1922 March 28 at 13:11:48.1 UTC |
Last Penumbral Internal Contact | 1922 March 28 at 13:51:56.9 UTC |
Last Umbral Internal Contact | 1922 March 28 at 14:58:55.1 UTC |
Last Central Line | 1922 March 28 at 15:01:36.7 UTC |
Last Umbral External Contact | 1922 March 28 at 15:04:18.1 UTC |
Last Penumbral External Contact | 1922 March 28 at 16:09:22.4 UTC |
Parameter | Value |
---|---|
Eclipse Magnitude | 0.93810 |
Eclipse Obscuration | 0.88002 |
Gamma | 0.17106 |
Sun Right Ascension | 00h25m58.2s |
Sun Declination | +02°48'27.5" |
Sun Semi-Diameter | 16'01.1" |
Sun Equatorial Horizontal Parallax | 08.8" |
Moon Right Ascension | 00h25m47.1s |
Moon Declination | +02°57'17.9" |
Moon Semi-Diameter | 14'48.3" |
Moon Equatorial Horizontal Parallax | 0°54'20.0" |
ΔT | 22.5 s |
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.
March 13 Ascending node (full moon) | March 28 Descending node (new moon) | April 11 Ascending node (full moon) |
---|---|---|
Penumbral lunar eclipse Lunar Saros 102 | Annular solar eclipse Solar Saros 128 | Penumbral lunar eclipse Lunar Saros 140 |
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. [4]
The partial solar eclipse on July 31, 1924 occurs in the next lunar year eclipse set.
Solar eclipse series sets from 1921 to 1924 | ||||||
---|---|---|---|---|---|---|
Descending node | Ascending node | |||||
Saros | Map | Gamma | Saros | Map | Gamma | |
118 | April 8, 1921 Annular | 0.8869 | 123 | October 1, 1921 Total | −0.9383 | |
128 | March 28, 1922 Annular | 0.1711 | 133 | September 21, 1922 Total | −0.213 | |
138 | March 17, 1923 Annular | −0.5438 | 143 | September 10, 1923 Total | 0.5149 | |
148 | March 5, 1924 Partial | −1.2232 | 153 | August 30, 1924 Partial | 1.3123 |
This eclipse is a part of Saros series 128, repeating every 18 years, 11 days, and containing 73 events. The series started with a partial solar eclipse on August 29, 984 AD. It contains total eclipses from May 16, 1417 through June 18, 1471; hybrid eclipses from June 28, 1489 through July 31, 1543; and annular eclipses from August 11, 1561 through July 25, 2120. The series ends at member 73 as a partial eclipse on November 1, 2282. 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 27 at 1 minutes, 45 seconds on June 7, 1453, and the longest duration of annularity was produced by member 48 at 8 minutes, 35 seconds on February 1, 1832. All eclipses in this series occur at the Moon’s descending node of orbit. [5]
Series members 47–68 occur between 1801 and 2200: | ||
---|---|---|
47 | 48 | 49 |
January 21, 1814 | February 1, 1832 | February 12, 1850 |
50 | 51 | 52 |
February 23, 1868 | March 5, 1886 | March 17, 1904 |
53 | 54 | 55 |
March 28, 1922 | April 7, 1940 | April 19, 1958 |
56 | 57 | 58 |
April 29, 1976 | May 10, 1994 | May 20, 2012 |
59 | 60 | 61 |
June 1, 2030 | June 11, 2048 | June 22, 2066 |
62 | 63 | 64 |
July 3, 2084 | July 15, 2102 | July 25, 2120 |
65 | 66 | 67 |
August 5, 2138 | August 16, 2156 | August 27, 2174 |
68 | ||
September 6, 2192 |
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 March 27, 1884 and August 20, 1971 | ||||
---|---|---|---|---|
March 27–29 | January 14 | November 1–2 | August 20–21 | June 8 |
108 | 110 | 112 | 114 | 116 |
March 27, 1884 | August 20, 1895 | June 8, 1899 | ||
118 | 120 | 122 | 124 | 126 |
March 29, 1903 | January 14, 1907 | November 2, 1910 | August 21, 1914 | June 8, 1918 |
128 | 130 | 132 | 134 | 136 |
March 28, 1922 | January 14, 1926 | November 1, 1929 | August 21, 1933 | June 8, 1937 |
138 | 140 | 142 | 144 | 146 |
March 27, 1941 | January 14, 1945 | November 1, 1948 | August 20, 1952 | June 8, 1956 |
148 | 150 | 152 | 154 | |
March 27, 1960 | January 14, 1964 | November 2, 1967 | August 20, 1971 |
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 | ||||
---|---|---|---|---|
March 4, 1802 (Saros 117) | February 1, 1813 (Saros 118) | January 1, 1824 (Saros 119) | November 30, 1834 (Saros 120) | October 30, 1845 (Saros 121) |
September 29, 1856 (Saros 122) | August 29, 1867 (Saros 123) | July 29, 1878 (Saros 124) | June 28, 1889 (Saros 125) | May 28, 1900 (Saros 126) |
April 28, 1911 (Saros 127) | March 28, 1922 (Saros 128) | February 24, 1933 (Saros 129) | January 25, 1944 (Saros 130) | December 25, 1954 (Saros 131) |
November 23, 1965 (Saros 132) | October 23, 1976 (Saros 133) | September 23, 1987 (Saros 134) | August 22, 1998 (Saros 135) | July 22, 2009 (Saros 136) |
June 21, 2020 (Saros 137) | May 21, 2031 (Saros 138) | April 20, 2042 (Saros 139) | March 20, 2053 (Saros 140) | February 17, 2064 (Saros 141) |
January 16, 2075 (Saros 142) | December 16, 2085 (Saros 143) | November 15, 2096 (Saros 144) | October 16, 2107 (Saros 145) | September 15, 2118 (Saros 146) |
August 15, 2129 (Saros 147) | July 14, 2140 (Saros 148) | June 14, 2151 (Saros 149) | May 14, 2162 (Saros 150) | April 12, 2173 (Saros 151) |
March 12, 2184 (Saros 152) | February 10, 2195 (Saros 153) |
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 | ||
---|---|---|
June 16, 1806 (Saros 124) | May 27, 1835 (Saros 125) | May 6, 1864 (Saros 126) |
April 16, 1893 (Saros 127) | March 28, 1922 (Saros 128) | March 7, 1951 (Saros 129) |
February 16, 1980 (Saros 130) | January 26, 2009 (Saros 131) | January 5, 2038 (Saros 132) |
December 17, 2066 (Saros 133) | November 27, 2095 (Saros 134) | November 6, 2124 (Saros 135) |
October 17, 2153 (Saros 136) | September 27, 2182 (Saros 137) |
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