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    • Source: July 2009 lunar eclipse

      • A penumbral lunar eclipse occurred at the Moonā€™s ascending node of orbit on Tuesday, July 7, 2009, with an umbral magnitude of āˆ’0.9116. 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 8 hours before apogee (on July 7, 2009, at 17:40 UTC), the Moon's apparent diameter was smaller. This eclipse entered only the southernmost tip of the penumbral shadow and thus was predicted to be very difficult to observe visually.
      This eclipse was the second of four lunar eclipses in 2009, with the others occurring on February 9 (penumbral), August 6 (penumbral), and December 31 (partial).


      Visibility


      The eclipse was completely visible over eastern Australia and western North and South America, seen rising over western Australia and setting over eastern North and South America.


      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 2009

      =
      An annular solar eclipse on January 26.
      A penumbral lunar eclipse on February 9.
      A penumbral lunar eclipse on July 7.
      A total solar eclipse on July 22.
      A penumbral lunar eclipse on August 6.
      A partial lunar eclipse on December 31.


      = Metonic

      =
      Followed by: Lunar eclipse of April 25, 2013


      = Tzolkinex

      =
      Preceded by: Lunar eclipse of May 26, 2002
      Followed by: Lunar eclipse of August 18, 2016


      = Half-Saros

      =
      Preceded by: Solar eclipse of July 1, 2000
      Followed by: Solar eclipse of July 13, 2018


      = Tritos

      =
      Preceded by: Lunar eclipse of August 8, 1998
      Followed by: Lunar eclipse of June 5, 2020


      = Lunar Saros 110

      =
      Preceded by: Lunar eclipse of June 27, 1991
      Followed by: Lunar eclipse of July 18, 2027


      = Inex

      =
      Preceded by: Lunar eclipse of July 27, 1980
      Followed by: Lunar eclipse of June 17, 2038


      = Triad

      =
      Followed by: Lunar eclipse of May 7, 2096


      = Lunar eclipses of 2009ā€“2013

      =
      This eclipse is one of five lunar eclipses in a short-lived series. The lunar year series repeats after 12 lunations or 354 days (Shifting back about 10 days in sequential years). Because of the date shift, the Earth's shadow will be about 11 degrees west in sequential events.


      = Saros 110

      =
      This eclipse is a member of Saros series 110. The previous event occurred on 27 June 1991. The next event is on 18 July 2027 which will end the 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 partial solar eclipses of Solar Saros 117.


      See also



      List of lunar eclipses and List of 21st-century lunar eclipses
      File:2009-07-07 Lunar Eclipse Sketch.gif Chart


      Notes




      External links


      2009 Jul 07 chart: Eclipse Predictions by Fred Espenak, NASA/GSFC
      Penumbral Eclipse of the Moon: 2009 July 07 Archived July 1, 2010, at the Wayback Machine
      Eclipses During 2009 [1]
      http://www.shadowandsubstance.com/

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