Astronomical algorithms are the algorithms used to calculate ephemerides, calendars, and positions (as in celestial navigation or satellite navigation). Examples of large and complex astronomical algorithms are those used to calculate the position of the Moon. A simple example is the calculation of the Julian day.

Numerical model of solar system discusses a generalized approach to local astronomical modeling. The variations séculaires des orbites planétaires describes an often used model.

See also

• Astrodynamics
• Celestial mechanics
• Charge-coupled device (a data-collecting device that is sometimes aimed at the sky and requires algorithms to process its output)
• Doomsday rule
• List of algorithms
• List of astronomical objects
• Meeus, Jean
• Transformation from spherical coordinates to rectangular coordinates
• An implementation of Astronomical Algorithms. Calculate MJD, Equation of Time and Solar Declination in Excel, CAD or your other programs. The Sun API is free and extremely accurate. For Windows Computers.