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How would I go about creating a non-standard size spheroid/projection?

Question asked by CircaGIS on Feb 28, 2015
Latest reply on Feb 28, 2015 by CircaGIS

I am looking to create my own spheroids/projections/coordinate system for extrasolar bodies that are not the same size as those available under the listing for Solar System bodies. Is there a process or tools within ArcGIS to do this? After searching about it does not seem obvious to me. Or am I otherwise relegated to using what is available?


Thank and cheers,