Speed in an Earth-centered inertial frame.
Realtime Kinematics
Realtime Kinematics recalculates the selected object's public-element model state at a short cadence and exposes WGS84 position, inertial speed, ground-track speed, heading and vertical rate with explicit element-quality context.
This panel turns the selected satellite's orbit model into movement numbers: position, altitude, speed, direction and how quickly altitude is changing.
Kinematics answers: where is the model satellite, how fast is it moving, and which direction is it going? These are calculations, not messages sent by the satellite.
SELECTED NORAD
ORBITAL ELEMENT
PROPAGATION
POSITION + VELOCITY
KINEMATICS
Operator & learner steps
- Select a satellite or enter a valid NORAD ID.
- Check element quality before interpreting motion.
- Compare state time with element epoch.
- Clear selection when finished.
What the terms mean
How fast the modeled subpoint moves across Earth's surface.
Instantaneous rate of altitude change in the model.
What this surface does not mean
- No collision-risk score is produced here.
- No maneuver recommendation is produced.
- No direct telemetry is claimed.