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How to convert body coordinate from Sun reference frame to Earth reference frame?

I have the coordinates of a celestial body w.r.t. Sun , expressed as (x,y,z), at a given time. I need to move this coordinates into a reference frame centered on Earth center, but after reading dozens ...
4
votes
2answers
213 views

How to convert a SPICE SPK kernel into human-readable data using SPICE toolkit and utilities

SPK2OEM is one of many of SPICE tools available here: https://naif.jpl.nasa.gov/naif/utilities_PC_Windows_32bit.html I am trying to extract ephemeris from one of the SPK files listed here: https://...
2
votes
1answer
95 views

Need javascript to solve xyz for a kepler

I have a python program that I use to calculate the xyz positions of a point in a kepler orbit. https://github.com/sczesla/PyAstronomy/blob/master/src/pyasl/asl/keplerOrbit.py It takes the following ...
3
votes
0answers
105 views

Looking for help in drawing diagrams to explain graphically NASA Horizons output

I searched a lot for a javascript library or a REST API to access full functionalities of powerful NASA Horizons tool, but with no luck, so I am trying to write my own interface, to replace the very ...