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    • Source: August 1951 lunar eclipse

      • A penumbral lunar eclipse will occur at the Moon’s ascending node of orbit on Friday, August 17, 1951, with an umbral magnitude of −0.8455. 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 about 1.9 days after perigee (on August 15, 1951, at 5:05 UTC), the Moon's apparent diameter was larger.
      This eclipse was the third of four penumbral lunar eclipses in 1951, with the others occurring on February 21, March 23, and September 15.


      Visibility


      The eclipse was completely visible over eastern and central North America, South America, western Europe, and much of Africa, seen rising over northwestern North America and setting over Eastern Europe, east Africa, and the Middle East.


      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. The first and last eclipse in this sequence is separated by one synodic month.


      Related eclipses




      = Eclipses in 1951

      =
      A penumbral lunar eclipse on February 21.
      An annular solar eclipse on March 7.
      A penumbral lunar eclipse on March 23.
      A penumbral lunar eclipse on August 17.
      An annular solar eclipse on September 1.
      A penumbral lunar eclipse on September 15.


      = Metonic

      =
      Followed by: Lunar eclipse of June 5, 1955


      = Tzolkinex

      =
      Preceded by: Lunar eclipse of July 6, 1944


      = Half-Saros

      =
      Preceded by: Solar eclipse of August 12, 1942


      = Tritos

      =
      Followed by: Lunar eclipse of July 17, 1962


      = Lunar Saros 108

      =
      Preceded by: Lunar eclipse of August 5, 1933
      Followed by: Lunar eclipse of August 27, 1969


      = Inex

      =
      Followed by: Lunar eclipse of July 27, 1980


      = Triad

      =
      Preceded by: Lunar eclipse of October 15, 1864
      Followed by: Lunar eclipse of June 17, 2038


      = Lunar eclipses of 1951–1955

      =


      = Metonic series

      =
      This is the third of five Metonic lunar eclipses.
      The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will in nearly the same location relative to the background stars.


      = 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 one partial solar eclipse of Solar Saros 115.


      See also


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


      Notes




      External links


      1951 Aug 17 chart Eclipse Predictions by Fred Espenak, NASA/GSFC

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