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Author Topic: Some questions about date system in US Alpha  (Read 3119 times)

APODman

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Some questions about date system in US Alpha
« on: March 16, 2015, 09:31:52 AM »
Hello !

Some questions:

- Is there any way to set the date and time of a simulation manually (directly in json file or in the software)?
- I can run a reatroativamente simulation?
- When running a simulation until a certain date, the position of the planets will be in accordance with the projection made by JPL Horizons, for example ?

Thanks in advance ! :)
« Last Edit: March 16, 2015, 07:28:20 PM by APODman »

im4space

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Re: Some questions about date system in US Alpha
« Reply #1 on: March 17, 2015, 06:13:55 AM »
This was discussed here
http://universesandbox.com/forum/index.php/topic,13822.msg141306.html#msg141306

Here is how to set the date and time

Alpha 12 Added YEAR-MONTH-DAY date to Solar System-based simulations and Encounters
You can find the date in the lower left corner

To set the starting date use Create → Encounters

For example start at Home → Create → Encounters → BH m=1 sun on Plane → edit (click on pen) → set the Date → turn Off Include Rogue Body → change Rate to .000000772 → Create

Now you have the Solar System running in real time.

Also even though the Date field doesn't show the time, it can be added.

APODman

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Re: Some questions about date system in US Alpha
« Reply #2 on: March 17, 2015, 03:06:16 PM »
Thanks im4space  :)

The ephemeris it's accurate for the projected date ?