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  1. #1
    Ron's Avatar
    Ron Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29



    http://neo.jpl.nasa.gov/news/news144.html

    Asteroid (4179) Toutatis to Pass Closely By Earth on Wednesday, September 29, 2004.
    Donald K. Yeomans and Paul W. Chodas
    Near-Earth Object Program
    September 27, 2004

    Toutatis, a potato-shaped asteroid about 4.6 km (3 miles) in its longest
    extent, will pass within 1,550,000 km (961,000 miles) of the Earth's center
    on Wednesday, September 29, 2004 - reaching its closest approach at
    13:36:32 GMT (06:36:32 PDT). This is roughly four times the distance from
    the Earth to the moon and closer than this asteroid has come to Earth since
    at least the twelfth century. Toutatis will not pass this closely
    again for the next 500 years. The passage is the closest Earth approach this
    century for a known asteroid of this size.

    Because of an extensive
    set of optical and radar observations, the orbit for Toutatis is one of the
    best determined of any asteroid and there is no chance that this object
    will collide with the Earth during this encounter - or any other encounter
    for at least 5 centuries.

    With the help of Toutatis radar observations, a shape and rotation model
    for this object has been developed. Details on this work by Steve Ostro,
    R. Scott Hudson and colleagues can be found at:

    http://www.eecs.wsu.edu/~hudson/Rese...steroids/4179/

    Simulations of the asteroid's rotation in space can be found at:

    http://reason.jpl.nasa.gov/~ostro/ToutatisHires.mov
    http://reason.jpl.nasa.gov/~ostro/ToutatisHires.avi

    [Diagram][Diagram]

    The two diagrams above show the circumstance of the asteroid flyby of the
    Earth. The first shows an oblique view of the flyby at the time of closest
    approach, with the Moon's orbit drawn in for scale. Toutatis approaches
    the Earth from the right in this diagram, passing from outside the Earht's
    orbit to inside on a path that passes beneath
    the ecliptic plane (the plane of the Earth's orbit). The second diagram is
    an edge-on view showing how Toutatis passes the Earth well under the
    ecliptic plane, which is shown as a straight line. Again, the Moon's orbit
    is shown for scale; note that it is slightly inclined to the ecliptic plane.

  2. #2
    Algomeysa2's Avatar
    Algomeysa2 Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29


    "Ron" <baalke@earthlink.net> wrote in message
    news:d5786437.0409270908.3b756b61@posting.google.c om...
    29, 2004.

    Apparently it'll only be visible in the Southern Hemisphere then, but in
    early October it'll be visible in the Northern Hemisphere...(with
    telescopes...or maybe a really good pair of binoculars)




  3. #3
    Annie Maes's Avatar
    Annie Maes Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29

    Hello,
    Can someone provide me a star chart with the path of Toutatis for October.
    Thanks
    Ann


    "Algomeysa2" <Algomeysa2NOSPAM@mindspring.comNOPESPAM> schreef in bericht
    news:gG_5d.4308$Ki1.3992@newsread2.news.atl.earthl ink.net...
    September



  4. #4
    Thomas Lee Elifritz's Avatar
    Thomas Lee Elifritz Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29

    September 27, 2004

    Ron wrote:


    For guidance only, errors may be large.

    So, if you have little faith in the computer modeling, you still have all day tomorrow,
    to put up your asteroid shutters, rush your asteroid preparations to completion, and
    evacuate to your nearest public asteroid shelter.

    This is a test of your asteroid emergency system.

    This is only a test.

    Thomas Lee Elifritz
    http://elifritz.members.atlantic.net


  5. #5
    tholen@antispam.ham's Avatar
    tholen@antispam.ham Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29

    Annie Maes writes:


    Why? By October, Toutatis has become a daytime object.


  6. #6
    Rick's Avatar
    Rick Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29

    "Thomas Lee Elifritz" <crackpots@everywhere.net> wrote in message news:4158C457.CCFC28D4@everywhere.net...

    They've got its orbit pegged to within +/- 30 meters.

    Yes, really.

    Rick



  7. #7
    Thomas Lee Elifritz's Avatar
    Thomas Lee Elifritz Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29

    September 28, 2004

    Rick wrote:


    Perturbatively, over the next 1000 years, all of the Hildas and other NEOs?


    Them govmint guys really got it all under control then I feel so safe sleeping in my bed at night, knowing
    that NASA and BUSH are doing the right thing, protecting the home planet, killin all dem evil teris hidin in
    da bush, and trakin all dem darn assroids, as only NASA and BUSH can. More oil, more oil wars, and fewer space
    telescopes and unsustainable space programs, is it?

    Really....

    Thomas Lee Elifritz
    http://elifritz.members.atlantic.net




  8. #8
    Rick's Avatar
    Rick Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29

    "Thomas Lee Elifritz" <crackpots@everywhere.net> wrote in message news:41594A07.95515404@everywhere.net...

    That's not the "they" I was referring to. Astronomers all over
    the world have been tracking Toutatis since its discovery.

    Rick



  9. #9
    Thomas Lee Elifritz's Avatar
    Thomas Lee Elifritz Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September29

    September 28, 2004

    Rick wrote:

    Thus guaranteeing that gravitational perturbations will not occur in the
    future?

    I am so relieved. I shall sell my asteroid shutters forthwith.

    Thomas Lee Elifritz
    http://elifritz.members.atlantic.net


  10. #10
    nachogrande's Avatar
    nachogrande Guest

    Default Asteroid 4179 Toutatis to Pass Closely By Earth on September 29


    "Thomas Lee Elifritz" <crackpots@everywhere.net> wrote in message
    news:56h6d.1820$Fg2.657707@newshog.newsread.com...


    I am curious why you would be so hostile about this. Just for the sake of
    discussion, since you distrust everyone and everything in authority or with
    some degree of firsthand knowledge or study about asteroid movement, just
    what preparationas are you making when they turn out to be wrong.

    What preparations should I, or for that matter, everyone else, be taking to
    ameliorate the effects of a gravitational perturbance on an ateroid.

    Furthermore, my OPINION is that such an occurance will NOT happen within my
    lifetime (estimated DOD, December 2034). My OPINION is based on reports from
    people who observe the heavens for a living. (BTW, astronomy workers aren't
    hired and don't change with different political regimes, at least not in the
    USA) Can you QUANTIFY the chances of such an occurance happening before my
    departure? Can you QUANTIFY the magnitude of a gravitational purturbance
    needed to change the orbit of ANY asteroid and then QUANTIFY the expected
    frequency of such an occasion and PREDICT the resulting impact date on poor
    old terra?

    Sure, everyone lies to you. So what? Give me some science that is more
    accurate than the science the liars are feeding you.

    I'm a nuts and bolts man. Lay it out for me in monosylabic terms and get me
    from today to date of impact with ALL of the causitive factors and resulting
    reactions. THEN I will consider using some of my scarce resources to insure
    my continued existence post event. Otherwise I will consider your arguments
    to be the product of paranoid, insecure whiner.

    chuck in persia



 

 
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