Data sources

NASA/JPL Small-Body Database
Names, orbits, sizes, rotation periods and orbit classes of all 26,566 named asteroids, and the naming citations (21,021 collected so far). US Government data, public domain.

IAU Minor Planet Center: Discovery Circumstances of Numbered Minor Planets
Discovery dates, observatories and discoverers.

Naming citations
Written by the discoverers and published by the IAU in the Minor Planet Circulars and the WGSBN Bulletins (CC BY 4.0), as served by the JPL Small-Body Database.

JPL: Approximate Positions of the Planets
Planet orbits and positions in the diagrams (E. M. Standish).

Baby and pet names
Name matches link to MixedName and FurryName.