# Talk:Parabolic trajectory

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## stub

How is this a stub, it is pretty long.Jamesrules90 (talk) 18:53, 10 March 2010 (UTC)

## Fixes

I just added the section on Barker's equation (kinda like Kepler's equation but for parabolic orbits). I've noticed that in addition to the page not containing sources, it is also a little repetitive, specifically with the identifications of variables. I'm going to try to clean this up a bit and maybe try to flesh it out. Any help with proofreading, formatting, sources or whatever would be great. Jaxcp3 (talk) 21:00, 4 August 2012 (UTC)

Warning: Barker's equation, as listed at the time of this comment, is incorrect. Do some dimensional analysis on it to see this: left side is a difference of time, which means it is measured in {second}. Right side is a paranthesis of sums of tangents (adimensional) and a square root of {meter^3 * second^(-2) / meter^3}. Which means the right side is measured in {second^(-1)}. This page gives a Barker's equation that is similar to the one here but you'll notice the square root (measured in {second^-1}) multiplies the difference of times there. Bringing it to the other side of the equation requires that it be turned over. Unless someone else fixes this first, I will do so tomorrow, once I learn more about editing wiki eqs.89.137.184.25 (talk) 12:06, 28 May 2013 (UTC)