Gravity Simulator
http://www.orbitsimulator.com/cgi-bin/yabb/YaBB.pl
General >> Discussion >> 2010 TK7 the Earths firsrt known Trojan
http://www.orbitsimulator.com/cgi-bin/yabb/YaBB.pl?num=1311881709

Message started by frankuitaalst on 07/28/11 at 12:34:52

Title: 2010 TK7 the Earths firsrt known Trojan
Post by frankuitaalst on 07/28/11 at 12:34:52

Nice to come from holiday and see thiis discovery as communicated by EDG .
Here's an animation of the first known Earths trojan .
The animation covers 300 years and starts inn 2009 ; In this view the solarsystem is seen edge on .
Earth is the littel moving dot near the center . To get some distance info I've added Mercury's orbit .
I've created also  a bigger animation, combining the edge on and the above view , but the file is almost 2MB , so I cannot post it here.

Title: Re: 2010 TK7 the Earths firsrt known Trojan
Post by abyssoft on 07/28/11 at 14:04:13

you should be able to post it Frankuitaalst. attachments can be up to 7.8 MB

Title: Re: 2010 TK7 the Earths firsrt known Trojan
Post by EDG on 07/29/11 at 02:54:22

Nice :)

Title: Re: 2010 TK7 the Earths firsrt known Trojan
Post by frankuitaalst on 07/31/11 at 03:32:33

Another representation of the orbit of 2010 TK7 :
The viewpoint is a co-rotating point with Earth at a distance of 1AU from Earth , outwards .
The camera looks down at Earth ( and the sun behind Earth ) .
The animation starts in 2009 where the Trojan is close to Earth and then slowly goes away from Earth , going "behind the sun" .
One can best imagine the closed orbit as being a patatoe chip which rotates away from Earth .
Try to imagine , it helps.
The animaton covers 390 years which seems to be the oscillation period .

Title: Re: 2010 TK7 the Earths firsrt known Trojan
Post by frankuitaalst on 07/31/11 at 05:56:51

Here's the evolution over one oscillation period (390 years) of some orbital paramaters of our Trojan .
The orbit seems relatively stable when the asteroid is at the other side of the sun .
When it is near Earth the Sma drops and rises very quickly .
This corresponds with the animation .
The eccentricity isn't quite harmonic , as the eccentricity does not end at the same level where it started .

Gravity Simulator » Powered by YaBB 2.1!
YaBB © 2000-2005. All Rights Reserved.