3 ms·

It does default to center of Earth. However even if the default wasn't center of the Earth, that couldn't alter the apparent size of the Earth from the perspect

• schiffern 9y ago
  >It does default to center of Earth. Thank you! This is the first I've heard either way. I do hope you can overcome the curse of knowledge[1] to see how the original post was ambiguous without that information. I simply had to know a-posteriori that the software worked like that (I didn't, the manual[2] offered no clues, and I hadn't yet re-done the calculation). >However even if the default wasn't center of the Earth, that couldn't alter the apparent size of the Earth from the perspective of the Roadster. I know the software doesn't rearrange the sky, but my hope is that you can understand how I arrived at that particular off-by-a-factor-of-two error[3] (oddly, by assuming less than I should have). [1] https://en.wikipedia.org/wiki/Curse_of_knowledge https://en.wikipedia.org/wiki/Curse_of_knowledge [2] http://www.ruf.rice.edu/~ruco/manuals/TheSky6Manual.pdf http://www.ruf.rice.edu/~ruco/manuals/TheSky6Manual.pdf [3] https://news.ycombinator.com/item?id=16384844 https://news.ycombinator.com/item?id=16384844