Solar eclipse of May 19, 1928
Template:Short description Script error: No such module "Solar eclipse". A total solar eclipse occurred at the Moon's ascending node of orbit on Saturday, May 19, 1928,[1] with a magnitude of 1.014. 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 total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. Occurring about 7 hours after perigee (on May 19, 1928, at 6:40 UTC), the Moon's apparent diameter was larger.[2]
It will be unusual in that while it is a total solar eclipse, it is not a central solar eclipse. A non-central eclipse is one where the center-line of totality does not intersect the surface of the Earth (when the gamma is between 0.9972 and 1.0260). Instead, the center line passes just above the Earth's surface. This rare type occurs when totality is only visible at sunset or sunrise in a polar region.
While totality was not visible for any land masses, a partial eclipse was visible for extreme southern South America and Southern Africa. This was the last of 56 umbral solar eclipses in Solar Saros 117.
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.[3]
| Event | Time (UTC) |
|---|---|
| First Penumbral External Contact | 1928 May 19 at 11:25:49.0 UTC |
| Equatorial Conjunction | 1928 May 19 at 12:50:01.4 UTC |
| First Umbral External Contact | 1928 May 19 at 13:12:03.1 UTC |
| Ecliptic Conjunction | 1928 May 19 at 13:14:20.1 UTC |
| Greatest Eclipse | 1928 May 19 at 13:24:19.5 UTC |
| Last Umbral External Contact | 1928 May 19 at 13:36:57.4 UTC |
| Last Penumbral External Contact | 1928 May 19 at 15:23:05.0 UTC |
| Parameter | Value |
|---|---|
| Eclipse Magnitude | 1.01401 |
| Eclipse Obscuration | - |
| Gamma | −1.00476 |
| Sun Right Ascension | 03h44m11.5s |
| Sun Declination | +19°47'20.4" |
| Sun Semi-Diameter | 15'48.2" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 03h45m33.4s |
| Moon Declination | +18°48'58.4" |
| Moon Semi-Diameter | 16'42.7" |
| Moon Equatorial Horizontal Parallax | 1°01'19.9" |
| ΔT | 24.2 s |
Eclipse season
Script error: No such module "Labelled list hatnote". 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.
| May 19 Ascending node (new moon) |
June 3 Descending node (full moon) |
June 17 Ascending node (new moon) |
|---|---|---|
| File:SE1928May19T.png | File:Lunar eclipse chart close-1928Jun03.png | File:SE1928Jun17P.png |
| Total solar eclipse Solar Saros 117 |
Total lunar eclipse Lunar Saros 129 |
Partial solar eclipse Solar Saros 155 |
Related eclipses
Eclipses in 1928
- A total solar eclipse on May 19.
- A total lunar eclipse on June 3.
- A partial solar eclipse on June 17.
- A partial solar eclipse on November 12.
- A total lunar eclipse on November 27.
Metonic
- Preceded by: Solar eclipse of July 31, 1924
- Followed by: Solar eclipse of March 7, 1932
Tzolkinex
- Preceded by: Solar eclipse of April 8, 1921
- Followed by: Solar eclipse of June 30, 1935
Half-Saros
- Preceded by: Lunar eclipse of May 15, 1919
- Followed by: Lunar eclipse of May 25, 1937
Tritos
- Preceded by: Solar eclipse of June 19, 1917
- Followed by: Solar eclipse of April 19, 1939
Solar Saros 117
- Preceded by: Solar eclipse of May 9, 1910
- Followed by: Solar eclipse of May 30, 1946
Inex
- Preceded by: Solar eclipse of June 8, 1899
- Followed by: Solar eclipse of April 30, 1957
Triad
- Preceded by: Solar eclipse of July 18, 1841
- Followed by: Solar eclipse of March 20, 2015
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.[4]
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 File:SE1928May19T.png Total (non-central) |
1.0048 | 122 | November 12, 1928 File:SE1928Nov12P.png Partial |
1.0861 | |
| 127 | May 9, 1929 File:SE1929May09T.png Total |
−0.2887 | 132 | November 1, 1929 File:SE1929Nov01A.png Annular |
0.3514 | |
| 137 | April 28, 1930 File:SE1930Apr28H.png Hybrid |
0.473 | 142 | October 21, 1930 File:SE1930Oct21T.png Total |
−0.3804 | |
| 147 | April 18, 1931 File:SE1931Apr18P.png Partial |
1.2643 | 152 | October 11, 1931 File:SE1931Oct11P.png Partial |
−1.0607 | |
Saros 117
Template:Solar Saros series 117
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.
Tritos series
Template:Solar Tritos series 2004 October 14
Inex series
Template:Solar Inex series 2015 March 20
Notes
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References
- Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
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