A penumbral lunar eclipse occurred at the Moon’s ascending node of orbit on Tuesday, May 25, 1937, with an umbral magnitude of −0.3033. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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 only about 18 hours after apogee (on May 24, 1937, at 13:30 UTC), the Moon's apparent diameter was smaller.
Visibility The eclipse was completely visible over much of North America, western and central South America, and Antarctica, seen rising over Australia and setting over northeastern North America, eastern South America, and west Africa.
Eclipse details Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.
+May 25, 1937 Lunar Eclipse Parameters Parameter Value Penumbral Magnitude 0.76969 Umbral Magnitude −0.30327 Gamma −1.15820 Sun Right Ascension 04h06m39.7s Sun Declination +20°53'38.5" Sun Semi-Diameter 15'47.3" Sun Equatorial Horizontal Parallax 08.7" Moon Right Ascension 16h06m15.0s Moon Declination -21°55'55.1" Moon Semi-Diameter 14'42.9" Moon Equatorial Horizontal Parallax 0°54'00.1" ΔT 23.9 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 May–June 1937 May 25Ascending node (full moon) June 8Descending node (new moon) Penumbral lunar eclipseLunar Saros 110 Total solar eclipseSolar Saros 136
Related eclipses Eclipses in 1937 A penumbral lunar eclipse on May 25. A total solar eclipse on June 8. A partial lunar eclipse on November 18. An annular solar eclipse on December 2.
Metonic Preceded by: Lunar eclipse of August 5, 1933 Followed by: Lunar eclipse of March 13, 1941
Tzolkinex Preceded by: Lunar eclipse of April 13, 1930 Followed by: Lunar eclipse of July 6, 1944
Half-Saros Preceded by: Solar eclipse of May 19, 1928 Followed by: Solar eclipse of May 30, 1946
Tritos Preceded by: Lunar eclipse of June 25, 1926 Followed by: Lunar eclipse of April 23, 1948
Lunar Saros 110 Preceded by: Lunar eclipse of May 15, 1919 Followed by: Lunar eclipse of June 5, 1955
Inex Preceded by: Lunar eclipse of June 14, 1908 Followed by: Lunar eclipse of May 4, 1966
Triad Preceded by: Lunar eclipse of July 24, 1850 Followed by: Lunar eclipse of March 25, 2024
Lunar eclipses of 1937–1940
Saros 110
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 one total and one partial = two solar eclipses of Solar Saros 117. May 19, 1928May 30, 1946
See also List of lunar eclipses List of 20th-century lunar eclipses
Notes
External links