Launch Window Planner
for Kerbal Space Program
Mission parameters
Date format
Kerbin Time (6h days, 426d years)
Earth Time (24h days, 365d years)
Origin
Edit orbit
Add body
Initial orbit
km
Destination
Edit orbit
Add body
Final orbit
km
No insertion burn (e.g. aerocapture or fly-by)
Earliest departure
Year
day
Transfer type
Ballistic
Mid-course plane change
Optimal
Show advanced settings...
Latest departure
Year
day
Time of flight
to
days
Plot it!
Reset
Basic instructions
Select the celestial body you will be departing from.
Enter the altitude of your parking orbit around that body. This is assumed to be a circular, equatorial orbit.
Select the celestial body you wish to travel to.
Enter the altitude of the orbit you wish to establish around your destination body. You may check the "No insertion burn" checkbox instead if you intend to perform a fly-by or aerobraking maneuver.
Enter the earliest departure date to include in the plot. Generally this should be your current game time, which you can find in the tracking station in the game.
Click the "Plot it!" button. After a few seconds a plot will appear showing how much Δv is required to reach your destination for different departure dates and times of flight. Click on any point on this plot to see full details of the selected transfer.
Delta-v transfer plot
Calculating...
Zoom in
Zoom out
Selected transfer details
Departure
Arrival
Time of flight
Phase angle
Ejection angle
Ejection inclination
Ejection Δv
Transfer periapsis
Transfer apoapsis
Transfer inclination
Transfer angle
Plane change time
Angle to intercept
Plane change angle
Plane change Δv
Insertion inclination
Insertion Δv
Total Δv
Refine transfer
Acknowledgements
Olex's beautiful
Interactive illustrated interplanetary guide and calculator
which inspired me to create this tool as a web page.
Robert Braeunig's excellent
Rocket and Space Technology
which provided most of the math powering these calculations.
And of course
Kerbal Space Program
for motivating me to finally learn orbital mechanics.
×
New Orbital Body
Body type
Planetary body
Vessel
Name
Reference body
Kerbol
Eve
Kerbin
Duna
Jool
Semi-major axis
km
Eccentricity
Inclination
°
Longitude of ascending node
°
Argument of periapsis
°
Mean anomaly at epoch
Mass
kg
Radius
km
Time of periapsis passage
UT