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I am working on a story. It would be helpful if someone could provide the distance in light years between star Epsilon Eridani and star Tau Ceti.

star graph

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    $\begingroup$ wolframalpha.com/input/… $\endgroup$
    – chirlu
    Jan 8, 2018 at 20:09
  • $\begingroup$ I suspect you're writing a Star Trek story ;) $\endgroup$
    – user21
    Jan 9, 2018 at 15:35
  • $\begingroup$ Nope 😉 @barrycarter $\endgroup$
    – Peaceman
    Jan 12, 2018 at 10:57
  • $\begingroup$ This page had the 3d position of those, and shows how to do the computation so you can verify the correctness yourself. celestialprogramming.com/snippets/starxyz.html $\endgroup$ Jan 4 at 17:10

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As answered by Wolframalpha, (as linked by chirlu) The distance between Tau Ceti and Epsilon Eridani is 5.45 light years.

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Using the data from http://www.johnstonsarchive.net/astro/nearstar.html I calculated 5.462 ly. The reference list stars to 25.1 ly with x, y, z coordinates and Right ascension, Declination and distance from our sun.

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