Kerbalist

Interplanetary window & ΔV calculator · KSP2 stock system
UT
T+0y,0d,00:00:00
Sync to save (T+) y d : :

Sync UT with a running KSP2

① Local bridge (recommended)
Run a small companion script (e.g. using the kRPC2 mod) that reads live UT from KSP2 and serves it on localhost. This page polls it every 2s. Works while flying — no manual saving needed.
② Watch save file
No mod required. Pick your KSP2 persistent save file — this page re-reads it every few seconds and syncs UT whenever the game autosaves. Chrome/Edge only.
Not connected — UT is manual / warp-driven.
ORIGIN — Kerbin
DEST — Duna
Controls
DragRotate orbit
Shift+DragPan view
ScrollZoom in / out
Double ClickCenter view
RReset view
Click planetBody info
Current phase Required phase Transfer arc Arrival ghost Gravity assist
Transfer
Assists
Porkchop
Body Info
Select an origin and destination, then click Plan Transfer to compute a Hohmann-style transfer window.

Gravity Assist Routes

Plan a transfer first — if an intermediate planet is well-positioned for a flyby, it'll show up here as an optional route.
Estimated by solving two Lambert arcs (origin → assist planet → destination) and comparing combined departure/arrival v∞ against the direct Hohmann transfer. Real assist trajectories also depend on flyby altitude and approach geometry — treat the savings shown here as a rough guide, not a flight plan.

Porkchop Plot

low Δvhigh Δv
X-axis: departure date. Y-axis: time of flight. Color = total heliocentric Δv (departure v∞ + arrival v∞), Lambert-solved per cell. Click a cell to inspect it.