Custom Atmosphere Model (Jacchia Roberts)

Hi, I am in the process of validating propagated spacecraft states by comparing it with STK. I noticed that STK uses the 'Jacchia-Roberts atmosphere model. I wondered if there is any way to implement this model on Orekit. Alternatively, is there any way to implement custom Atmosphere models? Any help is appreciated. Thank you!

Hi @msv,

Yes, you need to implement the Atmosphere interface, mostly the method getDensity().

Doesn’t STK have another model that would correspond to one of Orekit? (NRL-MSISE00, DTM2000, Jacchia-Bowman 2008, Harris-Priester or exponential)


Hi Max,

STK does have other models that I could use to compare. For the particular case I’m working with, the propagation was done using Jacchia-Roberts. Thank you.