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Thread: Asteroid 2005 YU55 Close Approach to Earth Tuesday Evening (Eastern US time)

  1. #1 Asteroid 2005 YU55 Close Approach to Earth Tuesday Evening (Eastern US time) 
    Comet Dust Collector Moderator
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    The asteroid 2005 YU55 will be making a close approach to earth about 2328 UT Tuesday; that's just after Astronomical Twilight (6:28 PM) in the EST time zone. It should be visible moving against the background stars in scopes 6" and larger.

    I have bmp and jpg files of the predicted locations if you have such a scope and would like to try.

    It will be visible later on but will be approaching the 98% full moon so may be harder to see.

    I haven't had time to check for western Europe, but intuitively that seems like a good spot as well.

    If you'd like a copy of my maps, PM me with your email address, and I will send them along ASAP.

    Meteor Wayne


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  3. #2  
    Forum Junior brane wave's Avatar
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    I will have to get a scope...doubtful by tuesday though.hopefully there will be soon footage online.


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  4. #3  
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    Quote Originally Posted by brane wave View Post
    I will have to get a scope...doubtful by tuesday though.hopefully there will be soon footage online.
    I'm sure there will be plenty, some even from our observatory (weather permitting)
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  5. #4  
    Brassica oleracea Strange's Avatar
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    This may be of interest: Asteroid 2005 YU55: See It For Yourself!
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  6. #5  
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    Quote Originally Posted by brane wave View Post
    I will have to get a scope...doubtful by tuesday though.hopefully there will be soon footage online.
    May Prince suggest? And thanks for notification, MW, most appreciated!

    SLOOH SpaceCamera - Live Event
    The bravest are surely those who have the clearest vision of what is before them, glory and danger alike, and yet notwithstanding go out to meet it.- Thucydides
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  7. #6  
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    Quote Originally Posted by The Finger Prince View Post
    Quote Originally Posted by brane wave View Post
    I will have to get a scope...doubtful by tuesday though.hopefully there will be soon footage online.
    And thanks for notification, MW, most appreciated!
    My pleasure. As a small solar system body guy, I've known about this for years, but didn't want to start a thread until it was timely. Will probably do a few interviews with radio stations tomorrow.

    And PS, thank you for not calling me dotcomrade. It is most appreciated!

    MeteorWayne

    BTW, there will be a map on the NJAA home page by tonight or tomorrow for those with 6 inch or larger scopes in the eastern US

    http://www.njaa.org
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  9. #8  
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    There has been plenty of speculation in the press about what would happen, if asteroid 2005 YU55 hit the Earth. Does anyone have any predictions about what would happen, if the said asteroid hit the moon ?
    .
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  10. #9  
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    Quote Originally Posted by Dave Wilson View Post
    There has been plenty of speculation in the press about what would happen, if asteroid 2005 YU55 hit the Earth. Does anyone have any predictions about what would happen, if the said asteroid hit the moon ?
    Rather than the 3 or 4 mile wide crater on the earth (for this encounter), it would be larger without the atmosphere, but not much so. The impact speed would be pretty much the same, and it would land in one piece instead of broken up, but the total energy deposited would be very similar.

    MW
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  11. #10  
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    Quote Originally Posted by MeteorWayne View Post
    Quote Originally Posted by Dave Wilson View Post
    There has been plenty of speculation in the press about what would happen, if asteroid 2005 YU55 hit the Earth. Does anyone have any predictions about what would happen, if the said asteroid hit the moon ?
    Rather than the 3 or 4 mile wide crater on the earth (for this encounter), it would be larger without the atmosphere, but not much so. The impact speed would be pretty much the same, and it would land in one piece instead of broken up, but the total energy deposited would be very similar.

    MW
    Thank you for that. Would this asteroid be able to give the moon a kinetic punch that would change its orbit around the Earth, and if it did, how would this affect the Earth ?
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  12. #11  
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    Naah, Way too small to have any significant effect. I mean technically, yes there would be an immeasurably small change the path of the moon, but when I say immeasureably small, I mean it.
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  13. #12  
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    OK then, asteroid 2005 YU55 is now out of the way. What is next ( that we know about ) to have a close encounter with our planet ?
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  14. #13  
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    Well, the next fairly close one is 2011 UT91 at about 10 times the lunar distance on Nov 15 (about 12 times further away than 2005 YU55).
    After that, 2000 YA on Dec 26 at 3X lunar distance.

    AFAIK, the next one closer that 2005 YU55 is Apophis on April 13 2029 at 0.1 X Lunar distance.

    Of course new ones will be discovered that come closer than 2005 YU55 long before then.

    Here's a list of upcoming close approaches:

    http://neo.jpl.nasa.gov/ca/
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  15. #14  
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    A quick look at your list of upcoming close approaches is very scary indeed.
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  16. #15  
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    Quote Originally Posted by Dave Wilson View Post
    A quick look at your list of upcoming close approaches is very scary indeed.
    Not really. The point is "stuff" comes "close" every day.
    Remember, that close approach list shows thing out to about 0.2 AU away; that's a fifth of the distance to the sun. It shows that in the next 2 months, only 2 objects even come closer to earth than 10 times as far away as the moon.

    There are 8331 known near earth asteroids, and none of tham have more than a 1 in 625 likelyhood of hitting us in the next century...and that one (2011 AG5) will be observed again in 2013 (hopefully) reducing the risk to near zero.

    Edit:

    There are only 3 Near Earth Asteroids that merit Torino Scale 1. Here's what that means:

    "A routine discovery in which a pass near the Earth is predicted that poses no unusual level of danger. Current calculations show the chance of collision is extremely unlikely with no cause for public attention or public concern. New telescopic observations very likely will lead to re-assignment to Level 0."

    All the other 8328 are TS Zero or below (Not even given a rating):

    TS 0 = "The likelihood of a collision is zero, or is so low as to be effectively zero. Also applies to small objects such as meteors and bodies that burn up in the atmosphere as well as infrequent meteorite falls that rarely cause damage"
    Last edited by MeteorWayne; November 9th, 2011 at 12:37 PM.
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  17. #16  
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    Of the images and videos I've seen so far on spaceweather.com, IMHO, this is the best:

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