It's really accurate as it calculates using the NORAD SGP4/SDP4 Models.
It Controls your Rig for doppler compensation / antenna pointing
Written by lx2gt AT users.sourceforge.net
WWW: http://ktrack.sourceforge.net/
- Diane Bruce, VA3DB
db@db.net
PR: ports/93781
Submitted by: Diane Bruce <db at db.net>