# NRLMSISE-00

NRLMSISE-00 (Naval Research Laboratory Mass Spectrometer and Incoherent Scatter Radar Exosphere) atmospheric density model.

**note**
For conceptual explanations, see [Atmospheric Drag](../../learn/orbital_dynamics/drag.md) in the Learn section.

::: brahe.density_nrlmsise00

::: brahe.density_nrlmsise00_geod

## See Also

- [Harris-Priester](harris_priester.md) - Simple empirical density model
- [Earth Models Module](index.md) - Complete API reference for earth models
- [Space Weather Data](../space_weather/index.md) - Required for NRLMSISE-00