The intended audience of libnova is C / C++ programmers, astronomers and anyone else interested in calculating positions of astronomical objects or celestial mechanics.
The current version of libnova can calculate:
* Aberration
* Nutation
* Apparent Position
* Dynamical Time
* Julian Day
* Precession
* Proper Motion
* Sidereal Time
* Solar Coordinates (using VSOP87)
* Coordinate Transformations
* Planetary Positions Mercury - Pluto (Mercury - Neptune using VSOP87)
* Planetary Magnitude, illuminated disk and phase angle.
* Lunar Position (using ELP82), phase angle.
* Elliptic Motion of bodies (Asteroid + Comet positional and orbit data)
* Asteroid + Comet magnitudes
* Parabolic Motion of bodies (Comet positional data)
* Orbit velocities and lengths
* Atmospheric refraction
* Rise, Set and Transit times.
* Semidiameters of the Sun, Moon, Planets and asteroids.
* Angular separation of bodies
* Hyperbolic motion of bodies
* Heliocentric (barycentric) time correction