Satellite Viewer
Press p for screenshot


Satellite Viewer


Satellite Viewer is a realtime simulation of all tracked artificial satellites currently in Earth orbit. Orbital TLE information is obtained daily from Celestrak and processed for display. The resulting data is also publicly available here and is updated each night at midnight, UTC.

This is built as a WebGL experiment using Three.js and is expected to work in the latest versions of Google Chrome, Firefox, & Internet Explorer 11.

© 2013 Kevin M. Gill. All Rights Reserved.

  • Click 'Start' to begin the animation, then control with 'Pause' and 'Resume'.
  • Toggle the category checkboxes on the right to view those satellites. Some satellites may belong to one or more categories. For example, the International Space Station belongs to both the "Potentially Visible" and "Space Station" categories.
  • Move your mouse over a satellite to see the name
  • Some orbits are colored to their category:
    • Gray: Most everything
    • White: Space Stations
    • Red: Debris/Space Junk
    • Green: Geostationary Satellites
    • Yellow: Military
View Controls: Satellite Viewer uses mouse and keyboard based navigation controls, similar to those in Google Earth.
  • Rotating: Rotate the scene by left-clicking and dragging with the mouse
  • Pitch/Roll: Control the pitch & roll of the scene by holding down shift while left-clicking and dragging with the mouse.
  • Panning: Pan the scene (offsetting the planet from the center, similar to turning your head away from the object of focus) by holding down Ctrl while left-clicking and dragging with the mouse.
  • Zooming: Zoom either with the scroll-wheel or by right-clicking and dragging the mouse up or down.
This is a Chrome Experiment
Building Solar System…