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A request for help.
Hi, all.
I'm writing a story where, for a tthrowaway bit, a character gives a coordinate position for the Sol system. My thought was to try to come up with some sort of external coordinate system where a point from the geometrical center of the milky way to the same point in the Andromeda Galaxy (as the nearest large object) would be the zero degree line and distance outward and north/south deviation from that center point would complete the description. I've tried, but can't find anything that would help me do this. (Obviously, since the Andromeda galaxy isn't in the plane of the equator of the Milky Way, I'm assuming that the zero degree line is the intersection of the plane of the Milky Way's equator with the plane that has both galaxies' centers as points in it.) I can find the Andromeda Galaxy's direction from Earth, but can't find anything that will tell me (a non-astronomer/non-mathematician) how the three points (Earth and galactic centers) stand in relation to each other. Can anyone point me in the right direction to find this out? I realize that this is, as said earlier, just going to be used in one line in the story, but I'd really like to be able to make it *sound* believable. I will be grateful for any assistance. |
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