Difference: LeOnides2005en (3 vs. 4)

Revision 417 Oct 2012 - SurinyeOlarte

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META TOPICPARENT name="AgendaAstronomica2005En"

Leonids 2005

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  The Leonids are one of the most characteristic meteor showers. They are given this name because they appear to radiate from the area of the sky occupied by Leo; that is, their radiant is situated there. It is necessary to remember that a meteor shower consists of lots of meteors (what we commonly call shooting stars) falling from the space into Earth's atmosphere.
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leonidsnorth.jpg
  (Image obtained by Gary W. Kronk using Sky Chart III 3.5 and Adobe Photoshop 5.5)
Approximate position of the radiant, for middle latitudes of northern hemisphere, at 2:00 a.m. local time for dates near the maximum (the middle of November). In order to know the dates and hours of maximums with accuracy to look predictions up is needed.
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  Every year, on 17th or 18th November, the Earth intercepts Tempel-Tuttle's orbit and fragments one day thrown out by the comet fall down through the atmosphere and a meteor shower occurs. If this interception takes place a short time after the comet has passed by (once every 33 years) the meteor shower is very intense. That is what we commonly call a "storm", when observing some thousands of shooting stars per hour is possible.
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leonid orbit.jpg
  (Image produced by Gary W. Kronk with the program Starry Night Pro 3.0)
http://cometography.com)" hreflang="en">Tempel-Tuttle's orbit and also the orbit of the fragments that give raise to the Leonids.
 
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