Star and constellation query in Swift 6. Render 120k stars up to mag 21. Star Catalogs including HR, HD, HIP, Gould and Bayer-Flamsteed designations.
Astronomical space coordinate and time conversion. Calculate Julian day, local sidereal time and ecliptic obliquity with great precision.
Collection of matrix arithmetics, CoreGraphics and SceneKit operator overloading and various interpolation support.
Black body temperature to color in Swift.