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ISS

USA-193 Interception

SDS Constellation

Mir Re-entry

Compass 2

Hunting the 'Warbler'

Using the Doppler Effect

Satellite Tracking and Orbits

Here you will find background to some of the activities, missions, spacecraft and satellites that appear in the Mission Diaries. You will also find information that will allow you to track some of the many artificial satellites which orbit the Earth.

Both visual and radio tracking are covered here but there is a separate section of the web site that lists radio tracking frequencies - it is linked from the left-hand menu.

Added in 200 February was the section covering the interception of USA-193 by a missile.

This area is being re-designed so you will still find sections in the 'old' format.