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Galactic Coordinates

D. Foxx

SOC-10
I vaguely recall the mention of a galactic coordinate system. But I don't remember if it was on this site or another. Anyone recall reading about such a thing? :confused:
 
I vaguely recall the mention of a galactic coordinate system. But I don't remember if it was on this site or another. Anyone recall reading about such a thing? :confused:

I don't recall anything of the such. Just the four basic directions; spinward, trailing, rimward, coreward.
 
I vaguely recall the mention of a galactic coordinate system. But I don't remember if it was on this site or another. Anyone recall reading about such a thing? :confused:

CT Supplement 8, "Astrography": "...The system used by the Imperium is based on rings of latitude, rays of latitude, and parsecs. Rays of latitude extend from the galactic core, while concentric rings of longitude are placed at one-parsec intervals. By convention, the concentric ring passing through Reference/Capital is labelled the 10,000th ring, and is used as a baseline. Similarly, the ray of latitude extending from the center of the Galaxy through Reference/Capital is designated as the first ray. Measurement is in parsecs, counting in the trailing direction. Computation reveals that the circumference of the 10,000th ring (r=10,000) is 62,832 parsecs. Counting spinward uses a subtraction from 62,833, which is the equivalent of the zero baseline. For example, Regina, of the Regina Subsector, in the Spinward Marches, is 9930 ring/ray 62723...."
 
Yup, Ring/Ray. travellermap.com uses an offset of it. I use it in my Traveller database.
 
Assuming, of course, that the galaxy is 1 parsec thick.

Which it most certainly is not... not at the 10,000th ring, nor anywhere else.
 
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