3D shape, cartography, and geoid of Comet 67P C-G |
3D shape, cartography, and geoid of Comet 67P C-G |
Aug 6 2014, 02:11 PM
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#16
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Solar System Cartographer Group: Members Posts: 10183 Joined: 5-April 05 From: Canada Member No.: 227 |
Explorer 1 said:
"A 2D map of C-G seems like a tough order; the projection math alone..." Don't worry! If you can put a grid on the surface (as we have seen already), you can warp that grid into any map projection you like. Mapping will be no huge problem - in fact I expect they have a rough one already (I've been playing with one myself). Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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Aug 16 2014, 09:42 PM
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#17
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Senior Member Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 |
That same idea occurred to me: map them separately as if they were Pluto and Charon, only in contact. Each part approximates a spheroid well enough. Making the common rotation axis the lynch-pin of the coordinate system forces horrendous distortions on the map. Furthermore any advantage in doing so will most likely prove ephemeral when the rotation axis shifts due to mass wasting at perihelion.
In fact the two parts may roll a bit and settle together differently at that time. How fares the coordinate system then? |
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