PREDICT is an easy to use, ncurses-based satellite tracking/orbital prediction program developed for theLinux operating system. It allows users to track satellites in earth orbit in real-time, or make orbital predictions in advance of their approach. A unique voice mode allowsazimuth and elevation headings of a satellite to be articulated to a ground-based observer through a soundcard in real-time to aid in locating and identifying satellitesthrough optical means. PREDICT also tracks positions of the Sun and Moon, and provides Doppler shift and pathloss calculations for analyzing radio communication paths between satellites and earth-based ground stations.