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.
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1$\begingroup$ wolframalpha.com/input/… $\endgroup$– chirluCommented Jan 8, 2018 at 20:09
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$\begingroup$ I suspect you're writing a Star Trek story ;) $\endgroup$– user21Commented Jan 9, 2018 at 15:35
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$\begingroup$ Nope 😉 @barrycarter $\endgroup$– PeacemanCommented Jan 12, 2018 at 10:57
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$\begingroup$ 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 $\endgroup$– Greg MillerCommented Jan 4 at 17:10
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2 Answers
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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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1$\begingroup$ Didn't know you could do that sort of thing of WolframAlpha - thanks. $\endgroup$ Commented Jan 8, 2018 at 21:15
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1$\begingroup$ @StephenG Wolfram alpha is convenient fo one-line answers but it's sometimes just plain wrong. It can not be trusted as an authoritative source because it's just a mindless robot when it comes to text-based queries. Why doesn't Wolfram Alpha show low gravitational acceleration for the Hudson Bay? $\endgroup$– uhohCommented Jul 28, 2021 at 9:54
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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.
