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asteroid close approach, 2011 Nov 08
The article at the link below indicates a forthcoming asteroid
approach by 2005 YU55 to within 325,000 km of Earth and states that the object is about 400m across. I would imagine that such an object would be quite bright! How bright will it get, and which hemisphere is favored observation-wise? http://www.scientificamerican.com/po...flyby-11-11-01 |
#2
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asteroid close approach, 2011 Nov 08
On Nov 1, 1:35*pm, wrote:
The article at the link below indicates a forthcoming asteroid approach by 2005 YU55 to within 325,000 km of Earth and states that the object is about 400m across. I would imagine that such an object would be quite bright! How bright will it get, and which hemisphere is favored observation-wise? http://www.scientificamerican.com/po...d=asteroid-pla.... It's actually kind of dark, and it'll likely get very close to our moon, though perhaps passing more above than along side. Of course the only public shared data is from an old March 10th swag via JPL. Let us all hope prey its trajectory hasn't shifted, because a lunar impact would be extremely problematic for us. http://translate.google.com/# Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / “Guth Usenet” |
#3
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asteroid close approach, 2011 Nov 08
On Tue, 1 Nov 2011 14:02:28 -0700 (PDT), Brad Guth
wrote: It's actually kind of dark, and it'll likely get very close to our moon, though perhaps passing more above than along side. Of course the only public shared data is from an old March 10th swag via JPL. Let us all hope prey its trajectory hasn't shifted, because a lunar impact would be extremely problematic for us. The elements posted by JPL are current as of 2011-08-27. In any case, this object will be a few hundred thousand kilometers from the Earth, and there is nothing that could perturb the orbit of a body like this enough to hit either the Moon or Earth in such a short time. And it's doubtful that a body this size hitting the Moon would cause any problems for the Earth at all. This body is large enough to pick up easily with a backyard telescope- calculate your own elements if you don't like the posted ones. |
#4
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asteroid close approach, 2011 Nov 08
On Nov 1, 5:11*pm, Chris L Peterson wrote:
On Tue, 1 Nov 2011 14:02:28 -0700 (PDT), Brad Guth wrote: It's actually kind of dark, and it'll likely get very close to our moon, though perhaps passing more above than along side. *Of course the only public shared data is from an old March 10th swag via JPL. Let us all hope prey its trajectory hasn't shifted, because a lunar impact would be extremely problematic for us. The elements posted by JPL are current as of 2011-08-27. In any case, this object will be a few hundred thousand kilometers from the Earth, and there is nothing that could perturb the orbit of a body like this enough to hit either the Moon or Earth in such a short time. And it's doubtful that a body this size hitting the Moon would cause any problems for the Earth at all. This body is large enough to pick up easily with a backyard telescope- calculate your own elements if you don't like the posted ones. Any direct hit or glancing blow to the moon could be extremely problematic for us, especially if it happened on the nearside. |
#5
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asteroid close approach, 2011 Nov 08
On 11/1/11 8:42 PM, Brad Guth wrote:
On Nov 1, 5:11 pm, Chris L wrote: On Tue, 1 Nov 2011 14:02:28 -0700 (PDT), Brad Guth wrote: It's actually kind of dark, and it'll likely get very close to our moon, though perhaps passing more above than along side. Of course the only public shared data is from an old March 10th swag via JPL. Let us all hope prey its trajectory hasn't shifted, because a lunar impact would be extremely problematic for us. The elements posted by JPL are current as of 2011-08-27. In any case, this object will be a few hundred thousand kilometers from the Earth, and there is nothing that could perturb the orbit of a body like this enough to hit either the Moon or Earth in such a short time. And it's doubtful that a body this size hitting the Moon would cause any problems for the Earth at all. This body is large enough to pick up easily with a backyard telescope- calculate your own elements if you don't like the posted ones. Any direct hit or glancing blow to the moon could be extremely problematic for us, especially if it happened on the nearside. Brad, get a life! Look at the path of 2005_YU55 with respect to the Earth and Moon http://neo.jpl.nasa.gov/images/2005_...oach_movie.gif |
#6
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asteroid close approach, 2011 Nov 08
On Nov 1, 9:02*pm, Sam Wormley wrote:
On 11/1/11 8:42 PM, Brad Guth wrote: On Nov 1, 5:11 pm, Chris L *wrote: On Tue, 1 Nov 2011 14:02:28 -0700 (PDT), Brad Guth *wrote: It's actually kind of dark, and it'll likely get very close to our moon, though perhaps passing more above than along side. *Of course the only public shared data is from an old March 10th swag via JPL. Let us all hope prey its trajectory hasn't shifted, because a lunar impact would be extremely problematic for us. The elements posted by JPL are current as of 2011-08-27. In any case, this object will be a few hundred thousand kilometers from the Earth, and there is nothing that could perturb the orbit of a body like this enough to hit either the Moon or Earth in such a short time. And it's doubtful that a body this size hitting the Moon would cause any problems for the Earth at all. This body is large enough to pick up easily with a backyard telescope- calculate your own elements if you don't like the posted ones. Any direct hit or glancing blow to the moon could be extremely problematic for us, especially if it happened on the nearside. * *Brad, get a life! Look at the path of 2005_YU55 with respect to * *the Earth and Moon * * *http://neo.jpl.nasa.gov/images/2005_...oach_movie.gif Are you jacking off, again? Do all ZNRs ????? Are you and your parrot friends taking credit for this one missing our moon? What about the next one, and the thousand others after that? (are you going to take credit for each of those missing us?) Are you also going to take full credit and responsibility for the ones that do not miss us or the moon? http://translate.google.com/# Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / “Guth Usenet” |
#7
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asteroid close approach, 2011 Nov 08
On Tue, 1 Nov 2011 18:42:31 -0700 (PDT), Brad Guth
wrote: Any direct hit or glancing blow to the moon could be extremely problematic for us, especially if it happened on the nearside. No, it wouldn't. No debris would be large enough to reach the Earth's surface. At most, we'd see a meteor shower, and it wouldn't be dense enough to be much of a threat to our satellites. Nothing problematic at all. But it's academic, since we know the elements, and we therefore know that it isn't going to hit the Moon. |
#9
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asteroid close approach, 2011 Nov 08
On Nov 1, 11:03*pm, Chris L Peterson wrote:
On Tue, 1 Nov 2011 18:42:31 -0700 (PDT), Brad Guth wrote: Any direct hit or glancing blow to the moon could be extremely problematic for us, especially if it happened on the nearside. No, it wouldn't. No debris would be large enough to reach the Earth's surface. At most, we'd see a meteor shower, and it wouldn't be dense enough to be much of a *threat to our satellites. You have such a simulator? Are you saying that glancing blows do not happen? Nothing problematic at all. But it's academic, since we know the elements, and we therefore know that it isn't going to hit the Moon. Any contact of similar or greater mass at 13+ km/sec would yield enough impact secondary shard exit velocity to escape the moon, and thousand tonne shards of paramagnetic basalt are going to be problematic. Why do you clowns keep taking credit? (it makes you sound as though you're jacking off) Are you going to take full credit and responsibility for those which do manage to hit either us or the moon? http://translate.google.com/# Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / “Guth Usenet” |
#10
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asteroid close approach, 2011 Nov 08
On Wed, 2 Nov 2011 06:25:29 -0700 (PDT), Brad Guth
wrote: No, it wouldn't. No debris would be large enough to reach the Earth's surface. At most, we'd see a meteor shower, and it wouldn't be dense enough to be much of a *threat to our satellites. You have such a simulator? Yes. Such impacts are modeled with a variety of simulation tools. In this case, however, you can get a pretty good estimate of the likely issues simply by looking at energy- which is not very large. Are you saying that glancing blows do not happen? No, although they are very rare. Any contact of similar or greater mass at 13+ km/sec would yield enough impact secondary shard exit velocity to escape the moon, and thousand tonne shards of paramagnetic basalt are going to be problematic. No, they are not (and what does "paramagnetic" have to do with anything?) If you're so interested in simulation, where's yours? How do you think that a lunar collision with a mere 400 meter asteroid is going to produce a flurry of Earth-directed, non-frangible debris with individual diameters greater than 10-20 meters, which would be the minimum requirement for reaching the ground with high velocity? You really don't have any idea at all what you are talking about. And again, you haven't addressed the FACT that there is zero possibility of this body striking the Moon at all. |
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