YU55: Nasa releases short film of 'near miss' asteroid as it passed by Earth within moon's orbit , page 1
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reply posted on 9-11-2011 @ 05:26 AM by definity
Originally posted by Noobastronomer
Nasa got this one right........again. But i was wondering how long before they get it wrong?? Would they inform the public about it?.

For those capable of grasping astronomical distances, this is what they would probably describe as a near miss.
An asteroid the size of an aircraft carrier yesterday whistled past Earth at a distance of 202,000 miles away – slightly nearer than the moon.
It is the largest such object to come so close in 35 years but the experts at Nasa remained relaxed, ruling out any chance of impact with the space rock known as 2005 YU55.





The last time a large cosmic interloper came that close to Earth was in 1976, and it won't happen again until 2028.
However, it was bad news for all but the most committed of stargazers. It was not visible to the naked eye - even at its closest point to Earth it was about 100 times dimmer than humans can observe naturally.


source: dailymail


NASA very vary vary vary rarely get it wrong these days the got best mathmaticians in the world with some of the best scientists in the world with some of the best computers in the world. For some reason some people on this board think of nasa as a few dudes sitting around when what they are is the pinicle of human race's endevour of science,maths and space
edit on 9-11-2011 by definity because: (no reason given)



reply posted on 9-11-2011 @ 05:48 AM by Illustronic
reply to post by angelchemuel


It's actually very similar to baby scans, that movie isn't photography, its radar astronomy, a technique of observing nearby astronomical objects by reflecting microwaves off target objects and analyzing the echoes.

Ultrasound scans, typical diagnostic sonographic scanners operate by sending sound frequencies and imaging the various frequencies that bounce back to form a spacial representation.

And Laser altimeters, referred to as LIDAR, uses laser light pulses and times the return of the light to represent distance differences, to image the surface altitude from a distance for 3D modeling, like radar astronomy only the range is much shorter than microwave echoes.

This image of a body 400-meters in diameter was over 800,000 miles away and has a resolution of about 7 feet per pixel. It must be understood how much this technology has advanced to image an area of 7-ft/pixel at those distances. No optical scope can come close to that not even Hubble, if Hubble was even able to track it, which it can't, thus a Hubble image would be a blurry dot about 2 pixels.


reply posted on 9-11-2011 @ 08:00 AM by FreedomKnight
reply to post by Firefly_


I doubt it hit Earth and blasted us into an alternate reality...I'm headed to my crappy job and in my alternate reality I'm living on a yacht surrounded by an infinite amount of women and I crap gold


reply posted on 9-11-2011 @ 11:31 AM by Illustronic
reply to post by Noobastronomer


Maybe because people turn first to NASA built and financed websites that illustrate the data from the MPC operated by the IAU on a three year grant from NASA's budget instead of going to the data on the MPC sites. If the IAU is truly an international astronomical union the where is the international money at to operate the organization, which also collects data from amateur astronomers around the world, why does every international United Nation organization have to be financed by American tax payer's money?

If you don't like it start a private international company with Russian, European, Australian, Japanese, Indian, and Chinese money then.

The Minor Planet Center operates at the Smithsonian Astrophysical Observatory (SAO), which is part of the Center for Astrophysics (CfA) along with the Harvard College Observatory (HCO).


reply posted on 9-11-2011 @ 12:54 PM by Hellhound604
reply to post by Illustronic


here is a short movie by Leonid Elenin as he tracked YU55 last night.

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