solid point: operator trajectory, coloured by distance from the ghost
under 1 km
under 10 km
under 30 km
30 km and beyond
ghost: the public catalogue's element set, propagated in your browser
Selected satellite
Click a point, or pick one from the list.
Largest deviation in this cycle
Operator ephemerides are predictions, not observations. Both positions shown are predictions.
The ghost is the public catalogue's element set (Space-Track) propagated with SGP4 in your browser.
The solid point is the operator-published trajectory, rebuilt from the scored deviation at six-hour
epochs, so it is a reconstruction, not the file itself. The operator's file includes planned
trajectory changes the public set cannot know about; a large distance is that gap, not an error of
the satellite. Inputs are archived by this project and witnessed by OpenTimestamps and the Wayback
Machine; they are not re-fetchable from the source after one cycle.