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YU55 will pass only 382 Miles from Moon - JPL data .... confirmed.

 
Anonymous Coward
User ID: 4833990
United States
11/08/2011 12:11 PM
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Re: YU55 will pass only 382 Miles from Moon - JPL data .... confirmed.
Two suggestions, first, calm down. Second, study some basic astronomy. In particular, study the Dawes' limit and angular size. If you do, you'll realize the radar images of YU55 are very good. The asteroid is about 4 times as wide as ISS, but it'll be about 1000 times farther away, making it virtually impossible to resolve it as more than just a dot with optical telescopes.
 Quoting: Astromut


Thank you for the response .. but

1. I am calm as a kitten and as curious as a cat.
2. Can you answer my questions as far as why the VLA has no pics of this thing?
3. What pics of this are you talking about other then the ones taken back in 2005 ( basically the same pic uploaded on 07/11/11 ) ? I would like to see more pics but I can not find them.
4. Why would only 2 radio dishes track this ?
5. I know its about 4 times wide as the ISS ( 400m ).
6. Why cant we resolve this ? Is it Too close ? .. Too Far ?? "Just a Dot" ??

I dont see why this particular object is So elusive to Anyone other then JPL or NASA..

Care to answer my top 5 questions in my post ? .. where is it..what mass/density..speed.. without those simple answers I dont know how JLP or anyone can for a fact give a perfect projectory of this.

Oh..and Why cant/didnt the VLA radio this thing back in 2005 or '06,'07'08'09'10 and now not even a peep from them ( too busy looking at the vast nebulae out there ?

Just wondering .. because there is its Gonna hit ( No proof and I dont think so as well ) .. and there is the its Not gonna hit .. (with little data other then some trajectories on a cool looking web page ).

DATA .. Give the Data or we can not even begin to do research !!
AstromutModerator
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11/08/2011 12:25 PM

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Re: YU55 will pass only 382 Miles from Moon - JPL data .... confirmed.
Thank you for the response .. but
 Quoting: Anonymous Coward 4833990

Usually whenever you hear some say "but" you can disregard what came immediately before it...
1. I am calm as a kitten and as curious as a cat.
 Quoting: AC

Then you only have to do the second part of what I told you to do. Well, you don't HAVE to do anything, but if you want to know the truth...
2. Can you answer my questions as far as why the VLA has no pics of this thing?
 Quoting: AC

The question itself baffles me, why would you assume they would? Sounds like you're projecting your personal expectations.
3. What pics of this are you talking about other then the ones taken back in 2005 ( basically the same pic uploaded on 07/11/11 ) ? I would like to see more pics but I can not find them.
 Quoting: AC


4. Why would only 2 radio dishes track this ?
 Quoting: AC

Most asteroids that pass earth don't get any dishes tracking them as they pass. Optical telescopes, but not dishes. Why do you claim this is strange? Areciebo should provide plenty of resolution. Don't need anything more.
5. I know its about 4 times wide as the ISS ( 400m ).
6. Why cant we resolve this ? Is it Too close ? .. Too Far ?? "Just a Dot" ??
 Quoting: AC

Too far, just a dot. Do the math. ISS is 4 times smaller but 1000 times closer, this is what ISS looks like in a telescope:

I dont see why this particular object is So elusive to Anyone other then JPL or NASA..
 Quoting: AC

It's not, see above, amateurs have seen it.
Care to answer my top 5 questions in my post ? .. where is it..what mass/density..speed.. without those simple answers I dont know how JLP or anyone can for a fact give a perfect projectory of this.
 Quoting: AC

Its mass is irrelevant to the trajectory, speed changes with time; you really need to grasp the basics first. I can give you the orbital elements I calculated for it; with those you can determine the location and speed for any given point in time.
[link to 2005yu55.jimdo.com]
Oh..and Why cant/didnt the VLA radio this thing back in 2005 or '06,'07'08'09'10 and now not even a peep from them ( too busy looking at the vast nebulae out there ?
 Quoting: AC

Yes, they have other targets to look at, playing the "if I was king" card doesn't actually mean anything.
DATA .. Give the Data or we can not even begin to do research !!
 Quoting: AC

[link to www.youtube.com]
[link to 2005yu55.jimdo.com]
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Halcyon Dayz, FCD

User ID: 1222987
Netherlands
11/08/2011 01:02 PM
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Re: YU55 will pass only 382 Miles from Moon - JPL data .... confirmed.
1. Where is the exact Location and direction of this YU55 ?
 Quoting: Anonymous Coward 4833990

The Minor Planet Center would be the place to get such information.

2. What is its Velocity ?
 Quoting: Anonymous Coward 4833990

As above.

3. What is its Density ?? ( very important )
 Quoting: Anonymous Coward 4833990

Why would that be important?

4. We are Just NOW taking radio pics of this thing ?
 Quoting: Anonymous Coward 4833990

No.

"We" took "radio pics" in April 2010.

5. Where the Fuck are the VLA Pics ??
 Quoting: Anonymous Coward 4833990

I don't think the VLA has RADAR capability.

6. Why is the projected path of YU55 in a straight line ? ( is it made of cotton with NO density or gravitational force ? ).
 Quoting: Anonymous Coward 4833990

Scale.
It's in orbit around the Sun, just like Earth. So it's orbit is curved just like Earth's.
That being said AS ITS DISCLAIMER says the little JPL java applet is not a projection
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

7. Why are there constant modifications on time/speed/distance? When those same "smart guys" can put something the size of a small shed into orbit and sling that baby around multiple planets/moons/gravitational fields BEFORE it ever leaves the Earth and work in real life!
 Quoting: Anonymous Coward 4833990

Because new observations are constantly being made.

8. Again..why are we just now looking at this thing with just a few radio scopes when they knew about it back in 2005 ? ( where are the VLA pics ? ).
 Quoting: Anonymous Coward 4833990

Why do you repeat yourself?
To get a nice round number?

9. Who believes the explanations of Why they can not get a Good image of the thing until it so close that even you can get a good pic of it with your camera phone.
 Quoting: Anonymous Coward 4833990

Exaggerate much.

The people who understand the explanation have no problem with it.

10. Lastly .. Who thinks they can zoom in on your front yard..zoom out on nebula Light years away with spectacular clearity .. but CAN NOT get a good pic of something that is going to pass within our moons orbit ?! ( and had 6 years to do this too ).
 Quoting: Anonymous Coward 4833990

Nebulae are really really big.
Much bigger then they are further away.

If that is the case .. then I suggest we suspend our research/technology/$$ on things we can see a thousand light years away ( with 30' orbiting platforms ) with mebbe 3 or 4 or 100 orbiting 5' lenses. You know..ones that can take at least a better pic of some NEO. Possibly better then some grainy pixelated half pic of an asteroid and/or comet that will pass close to us in 3 fooking days !!

Billions of dollars in grants and space exploration and we can not even see a good pic of YU55 ..
 Quoting: Anonymous Coward 4833990

Write you Congress person.
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Reaching for the sky makes you taller.

Hi! My name is Halcyon Dayz and I'm addicted to morans.
Anonymous Coward
User ID: 92341
Canada
11/08/2011 01:14 PM
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Re: YU55 will pass only 382 Miles from Moon - JPL data .... confirmed.
Houston, shoot that yu55 down. u need prastice shooting down with missile rocket in future or we are in shit.
LoveConquersAll

User ID: 1558772
United States
11/08/2011 01:24 PM
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Re: YU55 will pass only 382 Miles from Moon - JPL data .... confirmed.
ASTROMUTT, I have been seeing flashing lights like the ones coming from the satellite that you recorded with your telescope. My concern is, that lately, over probably the past 6 months, I have seen TONS of these above my house, other parts of my county, and basically in the southeast Alabama. My question is, is it unusual to see these lights no more than a mile up in the sky?
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Anonymous Coward
User ID: 3991586
United States
11/09/2011 06:21 PM
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Re: YU55 will pass only 382 Miles from Moon - JPL data .... confirmed.
WHEN please?

I may stay up if it's not too late.

But everywhere I look, people have different times.

Thank you!
AstromutModerator
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11/09/2011 07:27 PM

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Re: YU55 will pass only 382 Miles from Moon - JPL data .... confirmed.
ASTROMUTT, I have been seeing flashing lights like the ones coming from the satellite that you recorded with your telescope. My concern is, that lately, over probably the past 6 months, I have seen TONS of these above my house, other parts of my county, and basically in the southeast Alabama. My question is, is it unusual to see these lights no more than a mile up in the sky?
 Quoting: LoveConquersAll


Not sure which satellite you're referring to, IRAS? Basically any dead tumbling satellite will undergo brightness variations which will make it look like it's flashing. You should have seen UARS an orbit prior to re-entry, it flashed like crazy and it was crazy bright too.
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