Available
Project 01
TLE Tools
Paste a TLE to inspect its elements, propagate the orbit, and follow the spacecraft around a 3D Earth.
TLE parsingSGP4 propagationCesium
Tools I'm building
Space projects
Browser-based utilities for the parts of orbit work I would rather not redo by hand.
Current focus
Orbit propagation
In progress
Project 02
Conversion Toolkit
The conversions I keep needing in one place—epochs, anomalies, reference frames, and state vectors. Still being assembled.
Time systemsReference framesState vectors
Not published yet