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Author Topic: YU55 (2005 YU55)  (Read 9739 times)

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Alexa

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YU55 (2005 YU55)
« on: November 07, 2011, 11:29:18 AM »

YU55

or

2005 YU55


 YU55 (2005 YU55) is the name of the asteroid that is very close to the Earth and it will pass it on 8th November 2011, at a relatively close distance (324 000 km). It's less than the distance between the Earth and the Moon!


  Edit from Mr. SEO: (The scientific name of this asteroid is 2005 YU55)
« Last Edit: November 07, 2011, 11:32:16 AM by SEO »
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2005 YU55
« Reply #1 on: November 07, 2011, 11:52:19 AM »
And more scientific 2005 YU55

2005 YU55, also written as 2005 YU55, is a potentially hazardous asteroid[2] that is 400 meters in diameter.[3][4] It was discovered on 28 December 2005 by Robert S. McMillan at Steward Observatory, Kitt Peak.[1] On November 8 2011 it will pass within 0.85 lunar distances (about 201,700 miles)[5] of the Earth. This is the closest known approach by an asteroid with an absolute magnitude this bright since 2010 XC15 (H = 21.4) approached within 0.5 lunar distances in 1976.[6]

Impact risk assessment


In February 2010 it was rated 1 on the Torino Scale, indicating that a pass near the Earth is predicted that poses no unusual level of danger. On 19 April 2010, highly accurate radar targeting by the Arecibo radio telescope reduced uncertainties about the orbit by 50 percent.[4] This improvement eliminated any possibility of an impact with the Earth for the next 100 years.[4] It was removed from the Sentry Risk Table on 22 April 2010 and as such it now has a rating of 0 on the Torino Scale.[7]

On 8 November 2011 at 23:28 UT, the asteroid will safely pass within 0.85 lunar distances of the Earth.[3] A lunar distance of 0.85 is also 0.00217 AU (325,000 km; 202,000 mi).[3] On 9 November 2011 at 07:13 UT, the asteroid will pass 0.00160 AU (239,000 km; 149,000 mi) from the moon.[3] During the close approach, the asteroid should reach about apparent magnitude 11,[3][8] and may be visible to expert observers using high-end binoculars with an objective lens of 80mm or larger. Since the gibbous moon will interfere with the viewing,[6] amateur observers trying to visually locate the asteroid will require a telescope with an aperture of 6 inches (15 centimeters) or larger.[6][5]

The next time a known asteroid this large will come this close to Earth will be in 2028[6] when (153814) 2001 WN5 passes 0.00166 AU (248,000 km; 154,000 mi) from the Earth.[9]

Future trajectory

On 19 January 2029, 2005 YU55 will pass about 0.0019 AU (280,000 km; 180,000 mi) from Venus.[10] The close approach to Venus in 2029 will determine how close the asteroid will pass the Earth in 2041.[6] The uncertainties in the post-2029 trajectory will cause the asteroid to pass anywhere from 0.002 AU (300,000 km; 190,000 mi) and 0.3 AU from the Earth in 2041.[6] Radar astrometry in November 2011 should clarify the Earth encounter situation in 2041 and beyond.[6]

References

    ^ a b "MPEC 2005-Y47 : 2005 YU55". IAU Minor Planet Center. 2005-12-29. Retrieved 2011-05-05.
    ^ a b c d e "JPL Small-Body Database Browser: (2005 YU55)". 2010-04-21 last obs. Retrieved 2011-05-05.
    ^ a b c d e f g h Don Yeomans, Lance Benner and Jon Giorgini (March 10, 2011). "Asteroid 2005 YU55 to Approach Earth on November 8, 2011". NASA/JPL Near-Earth Object Program Office. Retrieved 2011-05-05.
    ^ a b c d Blaine Friedlander Jr. (April 30, 2010). "Arecibo telescope tracks 'potentially dangerous' asteroid within 1.5 million miles of Earth". Cornell Chronicle @ Cornell University. Retrieved 2011-05-05.
    ^ a b "NASA in Final Preparations for Nov. 8 Asteroid Flyby". NASA/JPL. October 26, 2011. Retrieved 2011-10-26.
    ^ a b c d e f g Dr. Lance A. M. Benner (2011 Oct 29). "2005 YU55 Goldstone Radar Observations Planning". NASA/JPL Asteroid Radar Research. Retrieved 2011-10-30.
    ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2011-05-06.
    ^ "2005YU55 Ephemerides for 9 Nov 2011". NEODyS (Near Earth Objects - Dynamic Site). Retrieved 2011-05-05.
    ^ "JPL Close-Approach Data: 153814 (2001 WN5)". 2011-01-04 last obs (arc=14.9 years). Retrieved 2011-10-16.
    ^ "JPL Close-Approach Data: (2005 YU55)". 2010-04-21 last obs. Retrieved 2011-05-05.


http://en.wikipedia.org/wiki/YU55
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How does 2005 YU55 looks like
« Reply #2 on: November 07, 2011, 11:55:38 AM »
It is how does 2005 YU55 looks like:



http://upload.wikimedia.org/wikipedia/commons/b/b8/Asteroid_2005_YU55.jpg

Description    
 This radar image of asteroid 2005 YU55 was generated from data taken in April of 2010 by the Arecibo Radar Telescope in Puerto Rico.
Date    

April 2010
Source    

http://www.jpl.nasa.gov/news/news.cfm?release=2011-129&cid=release_2011-129&msource=11129&tr=y&auid=8268911
Author    

NASA/Cornell/Arecibo (cropped by user) (Courtesy NASA/JPL-Caltech)

http://en.wikipedia.org/wiki/File:Asteroid_2005_YU55.jpg
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Animation of the trajectory for asteroid 2005 YU55
« Reply #3 on: November 07, 2011, 12:25:19 PM »
   It's very interesting! I am so excited! I saw the
Animation of the trajectory for asteroid 2005 YU55 - November 8-9, 2011  8) You will see it, too:

Description    
English: Animation of the trajectory for asteroid 2005 YU55 - November 8-9, 2011.
Date    
Source    

Image: http://www.nasa.gov/images/content/541440main_2005_YU55_approach.gif
Article: Asteroid 2005 YU55 to Approach Earth on November 8, 2011
Author    

NASA/JPL-Caltech



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A joke about YU55 (2005 YU55)
« Reply #4 on: November 07, 2011, 12:27:45 PM »
A joke about 2005 YU55 and Greece/Euro:
http://www.economist.com/blogs/newsbook/2011/11/week-ahead
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WOW ! IT'S TODAY! Today 2005 YU55 is coming!
« Reply #5 on: November 08, 2011, 01:49:09 PM »
   WOW, WOW!!! It's today! Today is November 08 2011! 2005 YU55 is coming! 2005 YU55, welcome ! And 2005 YU55, please be a good asteroid! We want to live more.  :) 2005 YU55, see you next time!
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2005 YU55
« Reply #6 on: November 08, 2011, 07:00:18 PM »
  2005 YU55. I think it's okay. No problems for the Earth now. Here, in Haikou (PRC), everything is alright. I am watching the news, translating some English-Chinese-Bulgarian stuff and waiting for my dinner.
 By the way, it's a windy day today (over here).
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Re: YU55 (2005 YU55)
« Reply #7 on: November 09, 2011, 02:28:30 PM »
  So...? Bye-bye, YU55 (2005 YU55)!  ;D
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Re: YU55 (2005 YU55)
« Reply #8 on: February 19, 2016, 07:12:15 AM »
I know this is an old topic. Not sure about the policies here regarding bringing back to life one that has gone on before. Since this was posted we've had a few noticed that have come fairly close to the earth without actually effecting us.

One of the things that makes this so hard to detect incoming is that the sun's glare prevents us from seeing them directly and it is usually after it passes and we see them by the reflection of light from the sun that we know such are in our neighborhood.

NASA has put into orbit a couple of satellites to correct this so we can see them coming before they get past us. Not long enough of a time span to actually do a lot but some warning.

Sooner or later one of these has our name on it, just like the dinosaurs found out. It's not if but rather when. Both the Oort Cloud and the Kuiper Belt have left over remnants of the making of the solar system. The Oort Cloud extends so far out that it is possible that Alpha Centari may well swap material in the outer fringes of it since the gravity between the two systems is near equalized. It wouldn't take much to bump a new comet into moving towards either system.

Many of these are long term orbits and it is a near certainty we haven't discovered all that orbit since we've not had telescopes, much less ones to reach out far distances towards the outer planets and planetoids that long to cover them.

Even if we did, there are other gravitational bodies beyond Pluto. We are fairly certain of this because new comets keep showing up from time to time. A fairly recent news article claims to have found a new body out beyond Pluto's orbit and one unknown to us if it is true. We know of at least 4 orbiting planetoids which have been named but this one is a new one we didn't know of.

It is such as these that can disturb the ice bodies orbiting out on the fringes and send them our way. There is a practically unlimited supply of them considering the solar system sets within a spherical shell of them. So sooner or later, one has our number. Not if but rather when.
When you put down the good things you ought to have done, and leave out the bad ones you did do — well, that’s Memoirs. ~ Will Rogers

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Re: YU55 (2005 YU55)
« Reply #9 on: February 19, 2016, 07:18:43 PM »
Warmly welcome to the International Omnilogy community. :-*

Don't mention it. It's an auto-message "120 days older thread blah-blah..." :o :( We think there are no old topics, when you have something new to say or comment.
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Re: YU55 (2005 YU55)
« Reply #10 on: February 19, 2016, 07:31:20 PM »
 I think I mentioned already (long time ago), that there are no new/old threads as far as everything is worth to comment again and again. For example -- history. Some king is dead, but we may talk, learn, write about him again and again. :)
 So, I think Mojo is very okay to post whenever and wherever he likes in this forum!
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