Modern constellation line data: Stellarium team.
Source: https://github.com/Stellarium/stellarium/blob/daace2add6a1bf886e8ee1934f51e9c69f818d18/skycultures/modern/index.json
License: Creative Commons Attribution-ShareAlike 4.0
https://creativecommons.org/licenses/by-sa/4.0/
Adaptation: retained constellation identifiers, Latin names and HIP line paths only; no illustrations.
Adapted dataset distributed under CC BY-SA 4.0.