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Angular Separation

==================== Many times when measuring asteroids or comets you will want to know how far and in what direction and asteroid or comet moved between exposures. This is a handy little calculator to figure it out. It is really only good for small angles (say less than 10 arcmin or so) so don't trust if for large angles.

When you invoke it, you will be asked for the RA and DEC of the first point and then the RA and DEC for the second point. JIMSAIP will return the separation in arcseconds and the position angle in degrees measured from the North clockwise (i.e., East is 90 deg).