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  • Source: May 1957 lunar eclipse

    • A total lunar eclipse occurred at the Moon’s ascending node of orbit on Monday, May 13, 1957, with an umbral magnitude of 1.2982. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 3.25 days after perigee (on May 9, 1957, at 4:30 UTC), the Moon's apparent diameter was larger.
    This lunar eclipse was the third of an almost tetrad, with the others being on May 24, 1956 (partial); November 18, 1956 (total); and November 7, 1957 (total).


    Visibility


    The eclipse was completely visible over Europe, Africa, the Middle East, and Antarctica, seen rising over eastern North America and South America 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.


    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.


    Related eclipses




    = Eclipses in 1957

    =
    An annular solar eclipse on April 30.
    A total lunar eclipse on May 13.
    A total solar eclipse on October 23.
    A total lunar eclipse on November 7.


    = Metonic

    =
    Preceded by: Lunar eclipse of July 26, 1953
    Followed by: Lunar eclipse of March 2, 1961


    = Tzolkinex

    =
    Preceded by: Lunar eclipse of April 2, 1950
    Followed by: Lunar eclipse of June 25, 1964


    = Half-Saros

    =
    Preceded by: Solar eclipse of May 9, 1948
    Followed by: Solar eclipse of May 20, 1966


    = Tritos

    =
    Preceded by: Lunar eclipse of June 14, 1946
    Followed by: Lunar eclipse of April 13, 1968


    = Lunar Saros 130

    =
    Preceded by: Lunar eclipse of May 3, 1939
    Followed by: Lunar eclipse of May 25, 1975


    = Inex

    =
    Preceded by: Lunar eclipse of June 3, 1928
    Followed by: Lunar eclipse of April 24, 1986


    = Triad

    =
    Preceded by: Lunar eclipse of July 12, 1870
    Followed by: Lunar eclipse of March 13, 2044


    = Lunar eclipses of 1955–1958

    =


    = Saros 130

    =
    Lunar saros series 130, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 56 umbral lunar eclipses (42 partial lunar eclipses and 14 total lunar eclipses). Solar Saros 137 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros 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). This lunar eclipse is related to two annular solar eclipses of Solar Saros 137.


    See also


    List of lunar eclipses
    List of 20th-century lunar eclipses


    Notes




    External links


    1957 May 13 chart Eclipse Predictions by Fred Espenak, NASA/GSFC

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