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The moon and Io are roughly the same diameter, so you can just divide Io's distance by the moon's distance to get the ratio of their perceived size without futz
by IncreasePosts 2y ago
The moon and Io are roughly the same diameter, so you can just divide Io's distance by the moon's distance to get the ratio of their perceived size without futzing with angles or geometry.
- VikingCoder 2y agoGood point! With that shortcut, yeah, it's about 0.05% of the apparent diameter. So the math seems to check out.