Space Time
Also known as Cat's Eye, NGC 6543, Caldwell 6.
One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.
Cat's Eye Nebula is placed at J2000 RA 18 h, Dec 66.6° in Draco, at an adopted distance of 4,272.6 light-years.
Cat's Eye Nebula (planetary nebula; central source NGC 6543 nucleus, Of/WR-type central star): adopted distance 1.3 kpc; kinematic age 2,136 years; expansion approximately 33.5 km/s (San Pedro Mártir echelle kinematics); outer radius used for arrival 0.5 light-years.
The prolate shell, equatorial ring, point-symmetric partial rings, ansae, and precessing-jet geometry follow the published SHAPE morpho-kinematic solution; each component’s physical size is its measured expansion speed times the 2,136-year kinematic age at the adopted 1.31 kpc distance. Emission points are deterministic presentation samples, not individually reconstructed gas parcels, and the surrounding giant halo of earlier mass loss is not modeled.