Reference frame · GCRS
The Geocentric Celestial Reference System
The reference system centred on the Earth, aligned with the barycentric frame but following the Earth in its orbit. It is the natural frame for the motion of satellites and for observations made from the ground.
Bodies, frames & concepts
Knowledge connections
- Associated withThe Barycentric Celestial Reference System
- Associated withEarth
Sources
The primary and reference sources this topic draws on.
- IAUInternational Astronomical Union
Official naming, definitions, constellation boundaries, and astronomical nomenclature.