Kopernicus help - Kerbol+Cercani Binary

[RA3236]

Hi,

As mentioned in the title, can someone redirect me to a link which could help me make a binary like this?

Every time I either try to move the planets to a new star or I try using Sigma Binary it doesn't work.

[Sigma88]

[quote name='RA3236']Hi,
As mentioned in the title, can someone redirect me to a link which could help me make a binary like this?
Every time I either try to move the planets to a new star or I try using Sigma Binary it doesn't work.[/QUOTE]

you can't use SigmaBinary since it will create a new body and put the Sun in orbit around it.

but for KSP the body called "Sun" must always be in center

so basically what you need to do is:

1- change the Sun into a barycenter (has to still be named Sun)
2- create a new star that looks exactly like the sun (with a different name, for example "Kerbol")
3- move the whole stock system in orbit around the new star
4- put cercani in orbit around the new star at the distance you want
5- calculate the distance between the new star and the barycenter (called Sun) using [URL="https://en.wikipedia.org/wiki/Barycenter#Two-body_problem"]this formula[/URL]
6- calculate the orbital period of cercani around the new star using [URL="https://en.wikipedia.org/wiki/Orbital_period#Calculation"]this formula[/URL]
7- calculate the mass the barycenter needs to have in order for the new star to have the same orbital period of Cercani (use same formula as before)
8- fix SoIs