Field completeness — what do we actually know?

Each planet has 8 data fields. Descriptive fields (terrain, climate) are almost universally documented. Physical constants (diameter, surface water) are routinely left blank.

Completeness by era

The original SWAPI dataset — drawn from sourcebooks and encyclopedias — set the standard. Every era since has documented planets less rigorously.

Planet by planet — the full audit

Each row is a planet. Each cell is a data field. Filled cells are documented; gray cells are null. Planets are grouped by era and sorted within each group by completeness.

On the data. Physical fields (diameter, gravity, rotation period, orbital period, surface water, population) were sourced from the Star Wars API (swapi.dev) for the original 60 planets, and from Wookieepedia for the rest. Descriptive fields (climate, terrain) are available for nearly all planets because they appear in on-screen dialogue and production notes — no sourcebook required.