May 1938 lunar eclipse
{{Short description|Total lunar eclipse May 14, 1938}}
{{Infobox lunar eclipse
| type = total
| image = Lunar eclipse chart close-1938May14.png
| caption = The Moon's hourly motion shown right to left
| date = May 14, 1938
| gamma = −0.3994
| magnitude = 1.0966
| saros_ser = 120
| saros_no = 54 of 84
| totality = 49 minutes, 22 seconds
| partiality = 213 minutes, 3 seconds
| penumbral = 354 minutes, 52 seconds
| p1 = 5:46:12
| u1 = 6:57:03
| u2 = 8:18:54
| greatest = 8:43:36
| u3 = 9:08:16
| u4 = 10:30:06
| p4 = 11:41:04
| previous = November 1937
| next = November 1938
}}
A total lunar eclipse occurred at the Moon’s ascending node of orbit on Saturday, May 14, 1938,{{cite web|title=May 13–14, 1938 Total Lunar Eclipse (Blood Moon)|url=https://www.timeanddate.com/eclipse/lunar/1938-may-14|publisher=timeanddate|access-date=18 December 2024}} with an umbral magnitude of 1.0966. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 4.1 days before apogee (on May 18, 1938, at 9:40 UTC), the Moon's apparent diameter was smaller.{{cite web|title=Moon Distances for London, United Kingdom, England|url=https://www.timeanddate.com/astronomy/moon/distance.html?year=1938&n=136|publisher=timeanddate|access-date=18 December 2024}}
This lunar eclipse was the first of an almost tetrad, with the others being on November 7, 1938 (total); May 3, 1939 (total); and October 28, 1939 (partial).
This was the last total lunar eclipse of Lunar Saros 120.
Visibility
The eclipse was completely visible over western North America, Antarctica, and the eastern Pacific Ocean, seen rising over east Asia and Australia and setting over eastern North America, South America, and west Africa.{{cite web|title=Total Lunar Eclipse of 1938 May 14|url=https://eclipse.gsfc.nasa.gov/LEplot/LEplot1901/LE1938May14T.pdf|publisher=NASA|access-date=18 December 2024}}
| class=wikitable |
Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.{{cite web|title=Total Lunar Eclipse of 1938 May 14|url=https://eclipsewise.com/lunar/LEprime/1901-2000/LE1938May14Tprime.html|publisher=EclipseWise.com|access-date=18 December 2024}}
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|+May 14, 1938 Lunar Eclipse Parameters ! Parameter ! Value |
| Penumbral Magnitude
| 2.15402 |
| Umbral Magnitude
| 1.09660 |
| Gamma
| −0.39944 |
| Sun Right Ascension
| 03h21m58.6s |
| Sun Declination
| +18°30'04.2" |
| Sun Semi-Diameter
| 15'49.4" |
| Sun Equatorial Horizontal Parallax
| 08.7" |
| Moon Right Ascension
| 15h21m44.2s |
| Moon Declination
| -18°51'44.3" |
| Moon Semi-Diameter
| 14'57.8" |
| Moon Equatorial Horizontal Parallax
| 0°54'55.0" |
| ΔT
| 24.0 s |
{{clear}}
Eclipse season
{{See also|Eclipse cycle}}
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.
| class="wikitable"
|+ Eclipse season of May 1938 ! May 14 | |
| 200px | 200px |
| align=center
| Total lunar eclipse | Total solar eclipse Solar Saros 146 |
Related eclipses
= Eclipses in 1938 =
- A total lunar eclipse on May 14.
- A total solar eclipse on May 29.
- A total lunar eclipse on November 7.
- A partial solar eclipse on November 21.
= Metonic =
- Preceded by: Lunar eclipse of July 26, 1934
- Followed by: Lunar eclipse of March 3, 1942
= Tzolkinex =
- Preceded by: Lunar eclipse of April 2, 1931
- Followed by: Lunar eclipse of June 25, 1945
= Half-Saros =
- Preceded by: Solar eclipse of May 9, 1929
- Followed by: Solar eclipse of May 20, 1947
= Tritos =
- Preceded by: Lunar eclipse of June 15, 1927
- Followed by: Lunar eclipse of April 13, 1949
= Lunar Saros 120 =
- Preceded by: Lunar eclipse of May 3, 1920
- Followed by: Lunar eclipse of May 24, 1956
= Inex =
- Preceded by: Lunar eclipse of June 4, 1909
- Followed by: Lunar eclipse of April 24, 1967
= Triad =
- Preceded by: Lunar eclipse of July 13, 1851
- Followed by: Lunar eclipse of March 14, 2025
= Lunar eclipses of 1937–1940 =
{{Lunar eclipse set 1937-1940}}
= Saros 120 =
{{Lunar Saros series 120}}
= Tritos series =
{{Lunar Tritos series November 2003}}
= Inex series =
{{Lunar Inex series March 2025}}
= Half-Saros cycle =
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros This lunar eclipse is related to two total solar eclipses of Solar Saros 127.
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| 240px |
See also
Notes
{{reflist}}
References
- {{LEplot1901 link|1938|May|14|T}}
- [http://astro.ukho.gov.uk/eclipse/1111938/ Total Eclipse of the Moon: 1938 May 14] {{Webarchive|url=https://web.archive.org/web/20171015044037/http://astro.ukho.gov.uk/eclipse/1111938/ |date=2017-10-15 }} HM Nautical Almanac Office
- [http://adsabs.harvard.edu/abs/1938PA.....46..385P The Lunar Eclipse of 1938 may 14 and its Saros Series, with Plate VI] Pogo, Alexander, Popular Astronomy, Vol. 46, p.385
External links
- [https://www.timeanddate.com/eclipse/lunar/1938-may-14 May 13/14, 1938 — Total Lunar Eclipse] www.timeanddate.com
{{Lunar eclipses}}
{{DEFAULTSORT:Lunar eclipse 1938-05}}
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