You can disconnect your computer from your internet service provider for the period when the computer is using the predictions downloaded from the server (while the satellite is following it's track) however after that time you will need to reconnect or the page will cease to function and display an error. You will know when the refresh occurs because the web page banner will change, and the satellite track will be updated. When this refresh operation occurs you will need to be connected to the internet or your browser will produce an error. After 3 hours it will need to refresh the information from the Predict engine and retreive the next group of predictions. The tracking system 'refreshes' the information each time you select a satellite. The position of the satellite will update when the satellite moves 1/2 degree in either latitude or longitude. The way this page works is that it downloads the selected satellite's predicted position from the Predict engine for the next 3 hours. If you are using a browser that is not listed and it is successful please let me know and I'll add it to the list and give you credit. If you are using one of the supported browsers and are having trouble, please file a bug report using the link on the bottom of this page. If you are on a slow dial-up connection this time difference may be greater. Time has been synchronized to UTC time at the AMSAT server so even if your PC's clock is off the time should be within 2 seconds of true UTC time. Additional modifications to provide better accuracy were provided by Paul Williamson, KB4MU The Predict engine was developed by John Magliacane, KD2BD and is used with his permission.The tracking web application was conceived, designed and developed by Emily Clarke, W0EEC.

The track will be approximately 2 orbits or approximately 3 hours. The trackmap will also show a series of yellow dots that are the satellite's track. If you don't see your QTH symbol, submit a pass prediction with the appropriate information and return to this page.

Your QTH will only appear if you have previously saved it on the Pass Prediction page. There are primarily two symbols used on the track map - the satellite, which is identified by it's name, and your QTH. Note: Position is approximate and depends on your computer's performance.įor the best in full featured tracking software visit The AMSAT Store

Orbitron satellite tracker