A partial lunar eclipse occurred at the Moon’s descending node of orbit on Friday, April 23, 1948, with an umbral magnitude of 0.0230. 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 3.5 days after perigee (on April 20, 1948, at 2:05 UTC), the Moon's apparent diameter was larger.
Visibility The eclipse was completely visible over east and northeast Asia, Australia, and Antarctica, seen rising over east Africa and the western half of Asia and setting over western North America and the eastern Pacific Ocean.
Eclipse details Shown below is a table displaying details about this particular lunar eclipse. It describes various parameters pertaining to this eclipse.
+April 23, 1948 Lunar Eclipse Parameters Parameter Value Penumbral Magnitude 1.01720 Umbral Magnitude 0.02300 Gamma 1.00165 Sun Right Ascension 02h04m17.6s Sun Declination +12°37'06.8" Sun Semi-Diameter 15'54.1" Sun Equatorial Horizontal Parallax 08.7" Moon Right Ascension 14h06m01.0s Moon Declination -11°44'01.4" Moon Semi-Diameter 15'59.7" Moon Equatorial Horizontal Parallax 0°58'42.0" ΔT 28.4 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 April–May 1948 April 23Descending node (full moon) May 9Ascending node (new moon) Partial lunar eclipseLunar Saros 111 Annular solar eclipseSolar Saros 137
Related eclipses Eclipses in 1948 A partial lunar eclipse on April 23. An annular solar eclipse on May 9. A penumbral lunar eclipse on October 18. A total solar eclipse on November 1.
Metonic Preceded by: Lunar eclipse of July 6, 1944 Followed by: Lunar eclipse of February 11, 1952
Tzolkinex Preceded by: Lunar eclipse of March 13, 1941 Followed by: Lunar eclipse of June 5, 1955
Half-Saros Preceded by: Solar eclipse of April 19, 1939 Followed by: Solar eclipse of April 30, 1957
Tritos Preceded by: Lunar eclipse of May 25, 1937 Followed by: Lunar eclipse of March 24, 1959
Lunar Saros 111 Preceded by: Lunar eclipse of April 13, 1930 Followed by: Lunar eclipse of May 4, 1966
Inex Preceded by: Lunar eclipse of May 15, 1919 Followed by: Lunar eclipse of April 4, 1977
Triad Preceded by: Lunar eclipse of June 22, 1861 Followed by: Lunar eclipse of February 22, 2035
Lunar eclipses of 1948–1951
Saros 111
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 annular solar eclipses of Solar Saros 118. April 19, 1939April 30, 1957
See also List of lunar eclipses List of 20th-century lunar eclipses
Notes
External links