I'm not sure if it accounted for acceleration, probably was just calculated to illustrate the amount of time dilation. The reason I used a year for my acceleration was because that's approximately how long it would take to accelerate to my velocity at 1G.
Thanks for the links, they were very helpful. I should have added the caveat that my figure was an approximation. In it, I had extrapolated from the link at the bottom and (despite nagging doubts) saw a relatively linear relationship from 99.9-99.9999%C, which resulted in my guess of ~1x10^30...
Upon discovering the Starship Titanic while doing some research about time travel, I was wondering what joules would be necessary to accelerate even faster to attempt a more severe time dilation: Namely, a 50,000kg ship to 99.999999999%C. Am I correct in my calculations that this requires app...