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Pluto and Orcus (Read 3135 times)
Tony
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Pluto and Orcus
08/30/15 at 13:52:26
 
Alan Stern, the principal investigator of the New Horizons space probe, goes by the name NewHorizons2015 on Twitter.
He just re-tweeted one of Frank's animations:
 
https://twitter.com/NewHorizons2015
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Tony
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Re: Pluto and Orcus
Reply #1 - 08/30/15 at 18:04:09
 
This inspired me to make one with the browser version.

Pluto and Orcus in a rotating frame holding Neptune stationary.
This simulation illustrates one of the reasons Orcus is sometimes referred to as the anti-Pluto.
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frankuitaalst
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Re: Pluto and Orcus
Reply #2 - 09/07/15 at 12:05:23
 
Nice animation Tony .  
Have you tried to set the rotating frame to Pluto ?  
I did so , covering 40000 years from now .  
In my sim Orcus seems to be on an oscullating  tadpole orbit , but not quite going as far as the opposite side from Pluto .  
Wonder if you get the same result .  In this case Orcus is rather a "coorbital " to Pluto.
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frankuitaalst
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Pluto and Orcus
Reply #3 - 09/08/15 at 01:10:40
 
I've checked my simulation of Orcus again and have the impression Orcus is on a semi tadpole orbit in rotating frame to pluto .  
Screenshot covers the first 500 years from now ( Pluto is represented as a yellow line ) .  
The orbit of Orcus will come closer to Pluto's , then intersect and moving away again to the left , but never getting to the opposite site of Pluto's.  
It seems Orcus is a coorbital of Pluto in a librating orbit .  
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frankuitaalst
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Re: Pluto and Orcus
Reply #4 - 09/08/15 at 12:18:17
 
In order to place "Orcus " in a broader perspective I introduced a new topic "Plutinos"
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Tony
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Re: Pluto and Orcus
Reply #5 - 09/09/15 at 22:41:48
 
If you set Pluto's mass to 0 in the simulation, Orcus would still have tadpole behavior to Pluto.  The orbits of Pluto and Orcus are only related because they're both related to Neptune.
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