Orbital Plane
"An imaginary gigantic flat plate containing an Earth satellite's orbit. The orbital plane passes through the center of the Earth." (National Aeronautics and Space Administration, 2014)
Sources
"Orbital Plane". NASA Glenn Research Center, National Aeronautics and Space Administration. Last modified June 12, 2014.
https://www.grc.nasa.gov/www/k-12/TRC/laefs/laefs_o.html#orbital_plane.
Accessed February 1, 2019.