Binary/Trinary Star Systems

[Sturn]

How has past or present Traveller star systems handled systems with multiple stars? I don't recall this being mentioned at all. There has always only been one UWP per star system representing the most habitable/inhabited planet. I would consider this the prime world in the entire multi-star system. What about the number of Gas Giants? Is the GG total number for the primary star system or all of them together?

It could also make sense to have a UWP for each sub-system in a binary or trinary system. But, I've never seen this.

 

[far-trader]

Only since CT LBB 6 Scouts c1986

 

[far-trader]

...What about the number of Gas Giants? Is the GG total number for the primary star system or all of them together?

Each one individually iirc.

...It could also make sense to have a UWP for each sub-system in a binary or trinary system. But, I've never seen this.

Again iirc, that is how CT LBB 6 and later enhanced system gen did it.

 

[Sturn]

Only since LBB 6 Scouts c1986

Apparently I never delved deeply before past UWP's into star system creation, I will go take a look. Thanks. Am I going to find UWP's for each sub-system?

[Edit] You answered and posted at about the same time I asked this.

 

[far-trader]

Only since LBB 6 Scouts c1986

Apparently I never delved deeply before past UWP's into star system creation, I will go take a look. Thanks.

You're very welcome, you can thank insomnia And NOVA for keeping me up.

If it's not in CT Scouts, then it might have been MT/DGP (umm... the title escapes me... )

 

[Nuclear Fridge Magnet]

Only since CT LBB 6 Scouts c1986

If memory serves, the Regina system was showcased as a ternary star system... with all the worthless little Mercury-class and Pluto-class lumps of rock thrown in. As if the local Law Level isn't enough of a headache! :twisted:

 

[Bense]

If it's not in CT Scouts, then it might have been MT/DGP (umm... the title escapes me... )

World Builder's Handbook and yes, it generates UWPs for all of the planets in a system, and addresses multiple stars. So does the TNE version, and GURPS Traveller: First In.

 

[GypsyComet]

Technically the belt and gas giant counts in a UWP are for the entire "system", regardless of the number of stars. A lot of the binary companions are going to be dwarf stars with no planetary bodies of their own. Once companion stars get out to the outer orbits they generally have planets of their own, at the cost of stunting the primary's collection.

 

[zero]

Is the World Builder's Handbook for MGT or Classic?

 

[GypsyComet]

Classic's book on the subject was Scouts (the original Book 6) and later DGP's Grand Survey and Grand Census.

MegaTraveller saw the combination of the two DGP books into the GDW book World Builders Handbook. Some useful bits on TLs needed for hazardous worlds is in Hard Times.

TNE would put some of that in the main book, and some of it in the World Tamer's Guide.
T4 and T20 never quite got that far, IIRC.

 

[zero]

Has Mongoose Traveller got an equivalent?

 

[GypsyComet]

Of those more detailed systems? Not really. Scout has a nice and easy system that concentrates more on game effect than astrography.

Got a specific UWP you want an extended system for? We can whip something up for you.

 

[AndrewW]

There's been mention of World Builders Handbook for MGT but haven't heard anything about that one for awhile now.