July 1954 lunar eclipse
A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Friday, July 16, 1954, with an umbral magnitude of 0.4054. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in the Earth's penumbra. 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. The Moon's apparent diameter was near the average diameter because it occurred 6.6 days after apogee and 7.8 days before perigee.
Visibility
The eclipse was completely visible over eastern South America, Africa, Europe, and Antarctica, seen rising over northwestern South America and much of central and eastern North America and setting over eastern Europe, the western half of Asia, and western Australia.Eclipse details
Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.| Parameter | Value |
| Penumbral Magnitude | 1.42024 |
| Umbral Magnitude | 0.40537 |
| Gamma | 0.78767 |
| Sun Right Ascension | 07h39m05.3s |
| Sun Declination | +21°29'36.6" |
| Sun Semi-Diameter | 15'44.2" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 19h38m14.9s |
| Moon Declination | -20°46'21.3" |
| Moon Semi-Diameter | 15'30.4" |
| Moon Equatorial Horizontal Parallax | 0°56'54.4" |
| ΔT | 30.9 s |
Eclipse season
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months 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.| June 30 Descending node | July 16 Ascending node |
| Total solar eclipse Solar Saros 126 | Partial lunar eclipse Lunar Saros 138 |
Related eclipses
Eclipses in 1954
- An annular solar eclipse on January 5.
- A total lunar eclipse on January 19.
- A total solar eclipse on June 30.A partial lunar eclipse on July 16.
- An annular solar eclipse on December 25.
Metonic
- Preceded by: Lunar eclipse of September 26, 1950
- Followed by: Lunar eclipse of May 3, 1958
Tzolkinex
- Preceded by: Lunar eclipse of June 3, 1947
- Followed by: Lunar eclipse of August 26, 1961
Half-Saros
- Preceded by: Solar eclipse of July 9, 1945
- Followed by: Solar eclipse of July 20, 1963
Tritos
- Preceded by: Lunar eclipse of August 15, 1943
- Followed by: Lunar eclipse of June 14, 1965
Lunar Saros 138
- Preceded by: Lunar eclipse of July 4, 1936
- Followed by: Lunar eclipse of July 26, 1972
Inex
- Preceded by: Lunar eclipse of August 4, 1925
- Followed by: Lunar eclipse of June 25, 1983
Triad
- Preceded by: Lunar eclipse of September 14, 1867
- Followed by: Lunar eclipse of May 16, 2041
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days. This lunar eclipse is related to two total solar eclipses of Solar Saros 145.| July 9, 1945 | July 20, 1963 |