Air Density Model(s)

Air density models

Currently only contains NRL MSISE-00 air density model

satkit.density.nrlmsise(itrf: satkit.itrfcoord, time: satkit.time | None)

NRL MSISE-00 Atmosphere Density Model

https://en.wikipedia.org/wiki/NRLMSISE-00

or for more detail: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2002JA009430

Parameters:

  • altitude_meters (float) – Altitude in meters

  • latitude_rad (float, optional) – Latitude in radians. Default is 0.

  • longitude_rad (float, optional) – Longitude in radians. Default is 0.

  • time (satkit.time|numpy.ndarray|list, optional) – Optional instant(s) at which to compute density & temperature. “Space weather” data at this time will be used in model computation. Note: at satellite altitudes, density can change by > 10 X depending on solar cycle

Returns:

(rho, T) where rho is mass density in kg/m^3 and T is temperature in Kelvin

Return type:

tuple