Astronomy Picture of the Day

   [1]Discover the cosmos! Each day a different image or photograph of our
      fascinating universe is featured, along with a brief explanation
                    written by a professional astronomer.

                                 2020 May 7
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                            Analemma of the Moon
               Image Credit & [3]Copyright: [4]Gyorgy Soponyai

   Explanation: [5]An analemma is that figure-8 curve you get when you
   mark the position of the Sun at the same time each day for one year.
   But the trick to imaging an [6]analemma of the Moon is to wait bit
   longer. On average the [7]Moon returns to the same position in the sky
   about 50 minutes and 29 seconds later each day. [8]So photograph the
   Moon 50 minutes 29 seconds later on successive days. Over one lunation
   or lunar month it will trace out an analemma-like curve as the Moon's
   actual position wanders due to [9]its tilted and elliptical orbit.
   [10]To create this composite image of a lunar analemma, astronomer
   Gyorgy Soponyai chose a lunar month from March 26 to April 18 with a
   good stretch of weather and a site close to home near Mogyorod,
   Hungary. Crescent lunar phases too thin and faint to capture around the
   New Moon are missing though. Facing southwest, the lights of
   [11]Budapest are in the distance of the base image taken on March 27.

                     Tomorrow's picture: pixels in space
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    Authors & editors: [23]Robert Nemiroff ([24]MTU) & [25]Jerry Bonnell
                                 ([26]UMCP)
          NASA Official: Phillip Newman [27]Specific rights apply.
              [28]NASA Web Privacy Policy and Important Notices
                A service of: [29]ASD at [30]NASA / [31]GSFC
                           & [32]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2005/APOD_Soponyai_Analemma_Moon.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.flickr.com/photos/vanamonde81/
   5. http://www.analemma.com/
   6. https://apod.nasa.gov/apod/ap050713.html
   7. https://solarsystem.nasa.gov/moons/earths-moon/lunar-phases-and-eclipses/
   8. https://www.flickr.com/photos/vanamonde81/49859483963/in/dateposted/
   9. http://www.fourmilab.ch/earthview/moon_ap_per.html
  10. https://www.youtube.com/watch?v=6euyU6fxUKE
  11. https://science.nasa.gov/analemma-sun
  12. https://apod.nasa.gov/apod/ap200506.html
  13. https://apod.nasa.gov/apod/archivepix.html
  14. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  15. https://apod.nasa.gov/apod/lib/aptree.html
  16. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  17. https://apod.nasa.gov/apod/calendar/allyears.html
  18. https://apod.nasa.gov/apod.rss
  19. https://apod.nasa.gov/apod/lib/edlinks.html
  20. https://apod.nasa.gov/apod/lib/about_apod.html
  21. http://asterisk.apod.com/discuss_apod.php?date=200507
  22. https://apod.nasa.gov/apod/ap200508.html
  23. http://www.phy.mtu.edu/faculty/Nemiroff.html
  24. http://www.phy.mtu.edu/
  25. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  26. http://www.astro.umd.edu/
  27. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  28. https://www.nasa.gov/about/highlights/HP_Privacy.html
  29. https://astrophysics.gsfc.nasa.gov/
  30. https://www.nasa.gov/
  31. https://www.nasa.gov/centers/goddard/
  32. http://www.mtu.edu/