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 (on June 9, 1974, at 10:35 UTC), 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.
+June 4, 1974 Lunar Eclipse Parameters 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 (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.
+ Eclipse season of June 1974 June 4Ascending node (full moon) June 20Descending node (new moon) Partial lunar eclipseLunar Saros 120 Total solar eclipseSolar 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
Lunar eclipses of 1973–1976
Saros 120
Tritos series
Inex series
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. May 30, 1965June 11, 1983
See also List of lunar eclipses List of 20th-century lunar eclipses
Notes
External links