Collision in Mu Ara ??

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Cham M
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Collision in Mu Ara ??

Post #1by Cham » 26.08.2006, 04:36

I just found something weird. Go to Mu Ara (HD 160691), and there are two exoplanets giants on a collision course. Set time to 27 Nov 2037. Picture below :

Image
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Don. Edwards
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Post #2by Don. Edwards » 26.08.2006, 04:40

Neat!

Don. Edwards
I am officially a retired member.
I might answer a PM or a post if its relevant to something.

Ah, never say never!!
Past texture releases, Hmm let me think about it

Thanks for your understanding.
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Fightspit
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Post #3by Fightspit » 26.08.2006, 09:33

See here:
http://www.celestiaproject.net/forum/viewtopic.php?t=9984

chris wrote:One of the interesting things in the paper is that one of the models that fit the radial velocity data had two of the planets sharing in orbit as a Trojan pair. However, they rejected this solution after a stability analysis showed that starting from the Trojan configuration, the system would be destroyed in less than a century.
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chris
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Post #4by chris » 26.08.2006, 17:50

The orbit of the outermost planet is poorly constrained because radial velocity observations of Mu Ara don't cover its entire orbital period. The paper by Pepe et al gives a different orbit for the outer planet. Significant for this discussion is that this paper lists a much lower eccentricity: 0.0985 instead of 0.31. This should keep any orbits from crossing. I'll talk to Grant and see if he thinks we should update the planets of the Mu Ara system.

--Chris
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