Features of the latest version

Sunday 1 April 2007.
 

-  automatic downloading of orbital elements :

  • from an URL
  • from an existing SpaceTrack account

-  filter on the elements used for predictions :

  • user-defined filter
  • dynamical filter based on the status of the element given by the site Celstrak

-  observer sites database and persistence
-  selection of the date and the duration of the predictions
-  selection of minimum elevation
-  selection of the light source :

  • sunlit flares
  • moonlit flares (this feature is still experimental and estimated magnitude is inaccurate)

-  results displayed :

  • satellite name
  • date
  • horizontal coordinates
  • equatorial coordinates
  • reflection angle and corresponding estimated magnitude
  • satellite illumination (percentage) and, if eclipsed, the type of the eclipse (P for partial, T for total)
  • ascending or descending node of the orbit
  • antenna causing the flare (F for front antenna, L for left and R for right)
  • distance and direction of the flare center, projected on the Earth’s surface at altitude 0

-  estimated accuracy of the results
-  export to KML format for 3D displaying in Google Earth :

  • flares positions and trajectories
  • satellites positions and trajectories
  • animation

-  export results to a HTML web page
-  selection of the displayed and exported fields
-  selection of the preferred units
-  parallelized computations on multi-processors platforms
-  a sky view is available and displays :

  • the trajectory of the flare
  • the brightest stars (dimmest stars have magnitude 5.5)
  • the stars’ names
  • the constellations and their name
  • the sun and the moon (with phases)

-  the sky view can be oriented to best fit to the observers’ situation
-  the date and time can be entered to visualize the sky at any time
-  real-time tracking is available to visualize the satellite’s position when it is about to produce a flare
-  the sky view can be exported :

  • to the printer with different color models (black and white, grayscale, true colors)