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Avoiding A Crash Course In Planetary Defense

  1. Mar 11, 2004 #1

    Ivan Seeking

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    Avoiding A “Crash Course” In Planetary Defense

    http://www.space.com/businesstechnology/technology/neo_defense_040310.html
     
  2. jcsd
  3. Mar 18, 2004 #2
    Let's expect that they have done the correct calculations in this case
    http://www.newscientist.com/news/news.jsp?id=ns99994793



    "The World's No.1 Science & Technology News Service



    Closest asteroid to pass Earth approaches


    12:27 18 March 04

    NewScientist.com news service

    An asteroid the size of a small office building will make the closest approach ever recorded to the Earth on Thursday evening

    Discovered just two days ago by an automated telescope scanning the sky for near-Earth objects, asteroid 2004 FH will miss the planet by a mere 40,000 kilometres, just over a tenth of the distance to the Moon.

    The previous record was set 27 September 2003, when 10-metre asteroid 2003 SQ222 missed the earth by about twice that distance. However, that object came from inside the Earth's orbit, so its close approach was not recorded until it had passed the Earth."





    Shivers
     
    Last edited: Mar 18, 2004
  4. Mar 18, 2004 #3

    selfAdjoint

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    Dearly Missed

    12:27 18 March 04

    AM or PM? I presume Greenwich? In which case its way past as I post.
     
  5. Mar 18, 2004 #4

    Nereid

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    Heading away now, but since it's an Aten*, it will surely be back someday, maybe in the lifetime of many PF members :wink:

    *"Atens have semimajor axes less than 1.0 AU, Apollos have perihelion distances less than 1.0 AU and Amors have perihelion distances less than 1.3 AU. Centaur objects have perihelia beyond the orbit of Jupiter and semimajor axes inside the orbit of Neptune. Transneptunian objects have orbits with semimajor axes beyond the orbit of Neptune--some of these objects, generally assumed to be in librations with Neptune, have perihelion distances inside the orbit of Neptune."
     
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