June 1974 lunar eclipse
A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Tuesday, June 4, 1974, with an umbral magnitude of 0.8270. 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. Occurring about 4.5 days before apogee, the Moon's apparent diameter was smaller.
Visibility
The eclipse was completely visible over Africa, much of Europe, the Middle East, and Antarctica, seen rising over eastern North America, South America, and western Europe and setting over much of Asia and Australia.Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.| Parameter | Value |
| Penumbral Magnitude | 1.87523 |
| Umbral Magnitude | 0.82695 |
| Gamma | −0.54887 |
| Sun Right Ascension | 04h50m08.7s |
| Sun Declination | +22°28'16.1" |
| Sun Semi-Diameter | 15'45.8" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 16h50m06.0s |
| Moon Declination | -22°58'33.1" |
| Moon Semi-Diameter | 15'02.3" |
| Moon Equatorial Horizontal Parallax | 0°55'11.4" |
| ΔT | 44.8 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 4 Ascending node | June 20 Descending node |
| Partial lunar eclipse Lunar Saros 120 | Total solar eclipse Solar Saros 146 |
Related eclipses
Eclipses in 1974
A partial lunar eclipse on June 4.- A total solar eclipse on June 20.
- A total lunar eclipse on November 29.
- A partial solar eclipse on December 13.
Metonic
- Preceded by: Lunar eclipse of August 17, 1970
- Followed by: Lunar eclipse of March 24, 1978
Tzolkinex
- Preceded by: Lunar eclipse of April 24, 1967
- Followed by: Lunar eclipse of July 17, 1981
Half-Saros
- Preceded by: Solar eclipse of May 30, 1965
- Followed by: Solar eclipse of June 11, 1983
Tritos
- Preceded by: Lunar eclipse of July 6, 1963
- Followed by: Lunar eclipse of May 4, 1985
Lunar Saros 120
- Preceded by: Lunar eclipse of May 24, 1956
- Followed by: Lunar eclipse of June 15, 1992
Inex
- Preceded by: Lunar eclipse of June 25, 1945
- Followed by: Lunar eclipse of May 16, 2003
Triad
- Preceded by: Lunar eclipse of August 3, 1887
- Followed by: Lunar eclipse of April 4, 2061
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 127.| May 30, 1965 | June 11, 1983 |