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Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 04:10
by Hugo.
Image

A visualisation of an asteroid's path of orbit which nearly collided with the Earth and Moon in 2003. Apparently, part of a NASA rocket.

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 04:13
by Verbal
fucking dinosaurs innit

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 04:22
by Hugo.
Haha you fucked a dinosaur. Youre GAY.

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 04:27
by rhino
so close. too bad

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 05:02
by zim
lavabug signal



could a somewhat accurate path of this be predicted after observing it after a few rotations?

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 05:04
by Verbal
fucking general relativity innit

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 08:13
by TamPron
wowzers.

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 13:21
by Abzu
:interessant:

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 15:07
by FUKKET

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 17:07
by Lavabug
That's awesome.



[quote name="zim"]lavabug signal



could a somewhat accurate path of this be predicted after observing it after a few rotations?[/quote]

Depending on how far into the future you want to look, a very accurate path could be determined with even less information than that, provided the observations/measurements of the object's velocities and distances to the earth had low uncertainties, and effects between the moon and asteroid were negligible. :santa: At the end where the thing flies off after a close moon encounter, the latter probably doesn't hold up.



Classical mechanics is a relatively predictable cunt, innit.

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 17:15
by zim
very cool :idea:



i seriously need to get my ass in gear with some math and physics

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 17:50
by Hugo.
Yeah neptune was predicted before it was actually seen because of perturbations in neptunes movement. ie Neptune wasn't where it was 'supposed' to be according to dem physics. :interessant:

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 17:56
by Ninny
[youtube]ktrtvCvZb28[/youtube]

This year Rosetta will land on a comet! :xx:

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 17:56
by Lavabug
:idea:



The only thing about the Solar system that wasn't predicted by Newtonian physics was the precession of the perihelion of Mercury's orbit. There was a stupidly small disagreement with theory and observation. Up until GR was developed, which accounted for it with extreme precision. That Einstein okahoma slamma kept shit real.

Re: Asteroid which nearly hit earth in 2003

Posted: 05 Jan 2014, 23:09
by Abzu
Einstein :xx:

Re: Asteroid which nearly hit earth in 2003

Posted: 06 Jan 2014, 01:54
by droidspawn
[quote name="Abzu"]Einstein :xx:[/quote]

Re: Asteroid which nearly hit earth in 2003

Posted: 06 Jan 2014, 19:00
by Hugo.
[quote name="Lavabug"]:idea:



The only thing about the Solar system that wasn't predicted by Newtonian physics was the precession of the perihelion of Mercury's orbit. There was a stupidly small disagreement with theory and observation. Up until GR was developed, which accounted for it with extreme precision. That Einstein handsome leprechaun kept shit real.[/quote]



They predicted the sun this way? :weed:

Re: Asteroid which nearly hit earth in 2003

Posted: 06 Jan 2014, 23:36
by Lavabug
Going into pedantic-as-fuck land, I should have said the only thing about Solar system's translational planetary motions. :redneck:



The weird direction of Neptune's (and Mercury's?) rotation axis is explained with past collision events, but this has no bearing on their translational motions.

Re: Asteroid which nearly hit earth in 2003

Posted: 06 Jan 2014, 23:40
by agony bagony
that animation is quite pretty

Re: Asteroid which nearly hit earth in 2003

Posted: 07 Jan 2014, 00:07
by Hugo.
The phenomenon where co-orbits sync up enough to throw one body out of orbit is called orbital resonance.



One of my favourite terms. :xx:

Re: Asteroid which nearly hit earth in 2003

Posted: 07 Jan 2014, 00:08
by zim
:interessant:

Re: Asteroid which nearly hit earth in 2003

Posted: 07 Jan 2014, 00:41
by Lavabug
Here's a really good "freeware" book on the subject if any of you are curious, accessible if you know the basics of vectors and calculus:

<!-- m -->http://farside.ph.utexas.edu/teaching/c ... estial.pdf<!-- m -->

Re: Asteroid which nearly hit earth in 2003

Posted: 07 Jan 2014, 00:58
by agony bagony
[quote name="Hugo."]The phenomenon where co-orbits sync up enough to throw one body out of orbit is called orbital resonance.



One of my favourite terms. :xx:[/quote]



better known as "a really bad breakup"

Re: Asteroid which nearly hit earth in 2003

Posted: 09 Jan 2014, 06:38
by TamPron
:redneck: