July 1953 lunar eclipse
Template:Short description Template:Infobox lunar eclipse A total lunar eclipse occurred at the Moon’s ascending node of orbit on Sunday, July 26, 1953,[1] with an umbral magnitude of 1.8629. It was a central lunar eclipse, in which part of the Moon passed through the center of the Earth's shadow. 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 2.1 days before perigee (on July 28, 1953, at 14:45 UTC), the Moon's apparent diameter was larger.[2]
With an umbral lunar eclipse magnitude of 1.8629, this was the largest lunar eclipse of the 20th century, larger than any since 1765 and until 2264.[3]Template:Rp Gamma had a value of only −0.0071. Due to the Moon's relatively large size, totality lasted 100 minutes and 42 seconds unlike July 16, 2000, which lasted 106 minutes and 25 seconds, the longest since August 13, 1859 (which was only 3 seconds longer). This was the darkest total lunar eclipse in the 20th century.
Visibility
The eclipse was completely visible over Australia, Antarctica, and much of the Pacific Ocean, seen rising over much of Asia and setting over North and South America.[4]
| File:Lunar eclipse from moon-1953Jul26.png File:Lunar eclipse chart close-1953Jul26.png |
Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[5]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 2.82655 |
| Umbral Magnitude | 1.86286 |
| Gamma | −0.00714 |
| Sun Right Ascension | 08h22m00.3s |
| Sun Declination | +19°26'49.2" |
| Sun Semi-Diameter | 15'45.0" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 20h22m00.9s |
| Moon Declination | -19°27'13.5" |
| Moon Semi-Diameter | 16'20.6" |
| Moon Equatorial Horizontal Parallax | 0°59'58.7" |
| ΔT | 30.5 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.
| July 11 Descending node (new moon) |
July 26 Ascending node (full moon) |
August 9 Descending node (new moon) |
|---|---|---|
| File:SE1953Jul11P.png | File:Lunar eclipse chart close-1953Jul26.png | File:SE1953Aug09P.png |
| Partial solar eclipse Solar Saros 116 |
Total lunar eclipse Lunar Saros 128 |
Partial solar eclipse Solar Saros 154 |
Related eclipses
Eclipses in 1953
- A total lunar eclipse on January 29.
- A partial solar eclipse on February 14.
- A partial solar eclipse on July 11.
- A total lunar eclipse on July 26.
- A partial solar eclipse on August 9.
Metonic
- Preceded by: Lunar eclipse of October 7, 1949
- Followed by: Lunar eclipse of May 13, 1957
Tzolkinex
- Preceded by: Lunar eclipse of June 14, 1946
- Followed by: Lunar eclipse of September 5, 1960
Half-Saros
- Preceded by: Solar eclipse of July 20, 1944
- Followed by: Solar eclipse of July 31, 1962
Tritos
- Preceded by: Lunar eclipse of August 26, 1942
- Followed by: Lunar eclipse of June 25, 1964
Lunar Saros 128
- Preceded by: Lunar eclipse of July 16, 1935
- Followed by: Lunar eclipse of August 6, 1971
Inex
- Preceded by: Lunar eclipse of August 14, 1924
- Followed by: Lunar eclipse of July 6, 1982
Triad
- Preceded by: Lunar eclipse of September 24, 1866
- Followed by: Lunar eclipse of May 26, 2040
Lunar eclipses of 1951–1955
This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[6]
The penumbral lunar eclipses on March 23, 1951 and September 15, 1951 occur in the previous lunar year eclipse set, and the lunar eclipses on June 5, 1955 (penumbral) and November 29, 1955 (partial) occur in the next lunar year eclipse set.
Saros 128
This eclipse is a part of Saros series 128, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on June 18, 1304. It contains partial eclipses from September 2, 1430 through May 11, 1827; total eclipses from May 21, 1845 through October 21, 2097; and a second set of partial eclipses from November 2, 2115 through May 17, 2440. The series ends at member 71 as a penumbral eclipse on August 2, 2566.
The longest duration of totality was produced by member 37 at 100 minutes, 43 seconds on July 26, 1953. All eclipses in this series occur at the Moon’s ascending node of orbit.[7]
| Greatest | First | |||
|---|---|---|---|---|
| File:Lunar eclipse chart close-1953Jul26.png The greatest eclipse of the series occurred on 1953 Jul 26, lasting 100 minutes, 43 seconds.[8] |
Penumbral | Partial | Total | Central |
| 1304 Jun 18 |
1430 Sep 02 |
1845 May 21 |
1899 Jun 23 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 2007 Aug 28 File:Lunar eclipse chart close-2007aug28.png |
2097 Oct 21 File:Lunar eclipse chart close-2097Oct21.png |
2440 May 17 |
2566 Aug 02 | |
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.
Tritos series
Template:Lunar Tritos series February 2008
Inex series
Template:Inex eclipse set info
| Series members between 1801 and 2200 | |||||
|---|---|---|---|---|---|
| 1808 Nov 03 (Saros 123) |
1837 Oct 13 (Saros 124) |
1866 Sep 24 (Saros 125) | |||
| 1895 Sep 04 (Saros 126) |
1924 Aug 14 (Saros 127) |
1953 Jul 26 (Saros 128) | |||
| File:Lunar eclipse chart close-1924Aug14.png | File:Lunar eclipse from moon-1924Aug14.png | File:Lunar eclipse chart close-1953Jul26.png | File:Lunar eclipse from moon-1953Jul26.png | ||
| 1982 Jul 06 (Saros 129) |
2011 Jun 15 (Saros 130) |
2040 May 26 (Saros 131) | |||
| File:Lunar eclipse chart close-1982Jul06.png | File:Lunar eclipse from moon-1982Jul06.png | File:Lunar eclipse chart close-2011jun15.png | File:Lunar eclipse from moon-2011Jun15.png | File:Lunar eclipse chart close-2040May26.png | File:Lunar eclipse from moon-2040May26.png |
| 2069 May 06 (Saros 132) |
2098 Apr 15 (Saros 133) |
2127 Mar 28 (Saros 134) | |||
| File:Lunar eclipse chart close-2069May06.png | File:Lunar eclipse from moon-2069May06.png | File:Lunar eclipse chart close-2098Apr15.png | File:Lunar eclipse from moon-2098Apr15.png | ||
| 2156 Mar 07 (Saros 135) |
2185 Feb 14 (Saros 136) | ||||
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[9] This lunar eclipse is related to two annular solar eclipses of Solar Saros 135.
| July 20, 1944 | July 31, 1962 |
|---|---|
| File:SE1944Jul20A.png | File:SE1962Jul31A.png |
See also
Notes
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- ↑ Listing of Eclipses of series 128
- ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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External links
- NASA: Lunar Eclipses: Past and Future
- 1953 Jul 26 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
- Index to Five Millennium Catalog of Lunar Eclipses, -1999 to +3000 (2000 BCE to 3000 CE)
- Eclipses: 1901 to 2000Script error: No such module "Unsubst".Template:Cbignore
- Photoelectric Photometry of the Lunar Eclipse of July 26, 1953, Publications of the Astronomical Society of the Pacific, Vol. 69, No. 407, p.153
References
- Bao-Lin Liu, Canon of Lunar Eclipses 1500 B.C.-A.D. 3000, 1992