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UFO Travel Calculator

Hypothetical spacecraft starts at rest,accelerates at constant proper acceleration for half the distance,then decelerates equally to rest. Special-relativistic educational model,not UFO observational data or a feasible propulsion prediction; no gravity,fuel or cosmic expansion.

Hypothetical spacecraft starts at rest,accelerates at constant proper acceleration for half the distance,then decelerates equally to rest. Special-relativistic educational model,not UFO observational data or a feasible propulsion prediction; no gravity,fuel or cosmic expansion.

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Result

Enter your values and run the tool to see your result.

How to use this tool

Check the units, enter your values, and run the tool. Results follow the assumptions and method below.

Calculation method

Elapsed time in departure frame2*sqrt((distance*9460730472580800/(2*299792458))^2+distance*9460730472580800/acceleration)/31557600
Onboard proper time2*299792458/acceleration*log(1+acceleration*distance*9460730472580800/(2*299792458^2)+sqrt((acceleration*distance*9460730472580800/(2*299792458^2))*(2+acceleration*distance*9460730472580800/(2*299792458^2))))/31557600
Maximum speed divided by light speedsqrt((acceleration*distance*9460730472580800/(2*299792458^2))*(2+acceleration*distance*9460730472580800/(2*299792458^2)))/(1+acceleration*distance*9460730472580800/(2*299792458^2))

References