Geocentric

Java library to calculate heliocentric and geocentric planetary positions. Two types of calculations are supported: a 'fast' version which has an accuracy of about 1 arc second and a 'full' version that implements the full VSOP87 theory. Platforms: Mac

GeographicLib is a small, handy set of C++ classes specially designed to help you convert between geographic, UTM, UPS, MGRS, geocentric, and local cartesian coordinates, for geoid calculations, and for computing geodesic. The emphasis is on returning accurate results with errors close to... Platforms: Windows

This software computes synthesis of spherical harmonics models on sparse coordinates or grids (provided in a geodetic or geocentric reference system). It exploits basic parallelism using openmp directives. A solution with MPI has not be taken into account since it cannot be so easily manageble... Platforms: Windows, Mac, Linux

Asynx Planetarium is a easy to use planetarium program and solar system simulator. It can display the night sky from any location on earth between the year 1760 and 9999 and covers over 10000 stars, the planets, all messier objects, all 88 constellations and the moon with phase. Fast animations:... Platforms: Windows, Windows 8, Windows 7, Windows Server

A comprehensive astronomy / space / satellite-tracking package. It allows you to view: An earth map, showing day and night regions, location of the Moon and current phase, and position of a selected earth satellite. Panel showing positions of planets and a selected asteroid or comet, both... Platforms: Windows

Alcyone Ephemeris is an accurate and fast astronomial ephemeris calculator covering the period 3000 BC to AD 3500. It calculates heliocentric, geocentric, and topocentric positions of the Sun (Earth), Moon, and planets in ecliptical, equatorial, and horizontal coordinates, with optional... Platforms: Windows

The function assumes the WGS84 model.Latitude is customary geodetic (not geocentric).Inputs may be scalars, vectors, or matrices of the same size and shape. Outputs will have that same size and shape.Usage[lat,lon,alt] = ecef2lla(x,y,z)lat = geodetic latitude (radians)lon = longitude (radians)alt... Platforms: Windows, Mac, *nix, Matlab, Solaris

ECEF2LLA - convert earth-centered earth-fixed (ECEF) cartesian coordinates to latitude, longitude, and altitude.USAGE:[lat,lon,alt] = ecef2lla(x,y,z)lat = geodetic latitude (radians)lon = longitude (radians)alt = height above WGS84 ellipsoid (m)x = ECEF X-coordinate (m)y = ECEF Y-coordinate (m)z... Platforms: Matlab

moonpos calculates the moon position using the method in the bookAstronomical Algorithms by Jean Meeus, Chapter 45, pp 307 - 313. Thealgorithm used is accurate to about 10 arcsec in longitude and 4 arcsecin latitude according to the book, although the time range is notmentioned. The periodic... Platforms: Matlab

This zip-file contains two m-files that plot the lines of force a magnetic dipole filed. The files are useful for educational purposes and as illustrations of the Geocentric Axial Dipole Field of the Earth.Usage of the functions is simple.h = lforce2d(NumberOfLines, LineColr);h =... Platforms: Matlab

GeographicLib is a small set of C++ classes for performing conversions between geographic, UTM, UPS, MGRS, geocentric, and local cartesian coordinates, for gravity (e.g., EGM2008), geoid height, and geomagnetic field (e.g., WMM2010) calculations, and for solving geodesic problems. It is a... Platforms: *nix