Calculate planet coordinates from angle measurements - by Don Cross

This page is a calculation tool that helps you determine the equatorial coordinates of a planet (or other celestial object) using angle measurements between the planet and three stars. Here is my explanation of the idea and derivation of the math used here. (I wrote that page originally on my Wikipedia user page, then adapted it for use here.)

 Angle Mode

Angle Star RA DEC

Planet RA Planet DEC Error (deg)