Celestial Phenomena

Calculate position and velocity of bodies

Calculate the position and velocity of celestial bodies and implement Earth nutation and Moon librations. Download ephemeris data for the celestial phenomena blocks using theaeroDataPackage函数。这些坐标转换到耳朵th-centered Earth-fixed (ECEF), use theDirection Cosine Matrix ECI to ECEFblock.

Blocks

Delta UT1	Calculate difference between principal Universal Time (UT1) and Coordinated Universal Time (UTC) according to International Astronomical Union (IAU) 2000A reference system
Earth Nutation	Implement Earth nutation
Earth Orientation Parameters	Calculate Earth orientation parameters (EOP)
Planetary Ephemeris	Implement position and velocity of astronomical objects
Moon Libration	Implement Moon librations