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Author Topic: [Help]Earth orbited by 2 moons in a binary system  (Read 6144 times)

Yannos

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[Help]Earth orbited by 2 moons in a binary system
« on: November 01, 2011, 07:27:23 AM »
Title says it all. I try to create an earth which has 2 moons but those two should be part of a binary system. Seems simple but I just can not do it.

Anyone can help?

If I could set the Barycenter to orbit earth problem would be solved, but...
« Last Edit: November 01, 2011, 07:52:54 AM by Yannos »

vh

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #1 on: November 01, 2011, 11:54:08 AM »
the moons need to be close. Select them and click binary orbit.

Yannos

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #2 on: November 01, 2011, 02:28:09 PM »
the moons need to be close. Select them and click binary orbit.

Thanks Mudkipz.

I think I found out what went wrong. For some reason you have to place the binary moons really far away from the earth. A single moon, or 2 single moons can be set to orbit earth really close or relatively far.

Binary moons need to be relatively very far from earth cz otherwise they get drawn by gravity.

EDIT: No, it can't be done, eventually the binary moons fall on earth no matter how far you place them. It seems that we can not set an orbit for binary moons around a planet.

FiahOwl

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #3 on: November 01, 2011, 02:43:37 PM »
the moons need to be close. Select them and click binary orbit.

Thanks Mudkipz.

I think I found out what went wrong. For some reason you have to place the binary moons really far away from the earth. A single moon, or 2 single moons can be set to orbit earth really close or relatively far.

Binary moons need to be relatively very far from earth cz otherwise they get drawn by gravity.

EDIT: No, it can't be done, eventually the binary moons fall on earth no matter how far you place them. It seems that we can not set an orbit for binary moons around a planet.


Move moons far away

Select Binary orbit for moons

Add barycenter

hold Ctrl and click on the barycenter and Earth.

Click binary orbit

vh

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #4 on: November 01, 2011, 02:59:14 PM »
the moons need to be close. Select them and click binary orbit.

Thanks Mudkipz.

I think I found out what went wrong. For some reason you have to place the binary moons really far away from the earth. A single moon, or 2 single moons can be set to orbit earth really close or relatively far.

Binary moons need to be relatively very far from earth cz otherwise they get drawn by gravity.

EDIT: No, it can't be done, eventually the binary moons fall on earth no matter how far you place them. It seems that we can not set an orbit for binary moons around a planet.

watch me do magic. Don't turn up the timestep if you want it to stay in one piece though :)

(drag this into documents>ubox>sims)

FiahOwl

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #5 on: November 01, 2011, 03:38:34 PM »
the moons need to be close. Select them and click binary orbit.

Thanks Mudkipz.

I think I found out what went wrong. For some reason you have to place the binary moons really far away from the earth. A single moon, or 2 single moons can be set to orbit earth really close or relatively far.

Binary moons need to be relatively very far from earth cz otherwise they get drawn by gravity.

EDIT: No, it can't be done, eventually the binary moons fall on earth no matter how far you place them. It seems that we can not set an orbit for binary moons around a planet.

watch me do magic. Don't turn up the timestep if you want it to stay in one piece though :)

(drag this into documents>ubox>sims)


Except for the fact that the orbits get wider and wider...

Dan, you need to fix Binary orbit saving.

vh

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #6 on: November 01, 2011, 03:59:06 PM »
interesting, does it fall apart eventually? i'll assume you left the time step as it was.

FiahOwl

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #7 on: November 01, 2011, 04:08:25 PM »
interesting, does it fall apart eventually? i'll assume you left the time step as it was.


I quit there, but is Logic applies, Yes. It will fall apart.

vh

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #8 on: November 01, 2011, 04:10:45 PM »
http://youtu.be/ewiZb9UuADg?hd=1

anyway, i'll go run then sim and see what happens. Who knows :) it might randomly stabilize.

Yannos

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Re: [Help]Earth orbited by 2 moons in a binary system
« Reply #9 on: November 02, 2011, 02:22:18 AM »
Thank you people, worked like a charm:

http://steamcommunity.com/profiles/76561198009330957/screenshot/594701250377216335?tab=public

Thank you again! Now let's make a binary black hole system :o