Binaries Just "Sit There"

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Tegmine
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Joined: 20.03.2011
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Binaries Just "Sit There"

Post #1by Tegmine » 25.05.2020, 13:13

So I've been able to incorporate my old add-ons, and everything checks out (I think) on some of my binary .stc files. I go in to check how they look/function/etc, and my binary systems are quite motionless. The orbits are shown when you click on each individual star, but not both, and the stars do not move from their position.

At first I assumed it was something I neglected to add to the stars' respective files, but I went ahead and checked on Porrima, since it has a highly eccentric, fairly small orbit so is a good control sample...I speed up the time frame and....nada. Nothing. Zero. Zip. Zilch. Dead slugs move more than the stars on my screen.

I'm running v. 1.61 for Linux. Am I missing a bit of code or something?


Many thanks,


-M-

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gironde M
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Post #2by gironde » 25.05.2020, 14:40

it would be good to attach your code.

:hi:

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Tegmine
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Post #3by Tegmine » 25.05.2020, 15:33

It happens to binaries that are already in the program. Not just what I've added in.

-M-

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Gurren Lagann
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Post #4by Gurren Lagann » 25.05.2020, 16:03

Just noting a few things, since you recently returned from a long hiatus:

Wide binary systems take a long time to orbit (several years at least), so a timewarp of, say, 100000x real time, isnt enough.

For example, a binary system with an orbital period of 20 years will take ~6.3 seconds to orbit at 100 million times faster than real time.
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SevenSpheres
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Post #5by SevenSpheres » 25.05.2020, 17:40

Gurren is probably right, since Porrima has an orbital period of 168.9 years and I have to speed up time to 1e+07x or 1e+08x for there to be visible motion. If you've sped up time that fast and Porrima is still motionless, it may be a bug in 1.6.1 for Linux.
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Tegmine
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With us: 9 years 7 months

Post #6by Tegmine » 26.05.2020, 12:17

Ok...looks like it was rather dependent on the time speed...had to go to about 500,000,000 x's faster. Classic case of "user error." :oops:


-M-


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