# Data

- `constellations_hip.fab` : [Stellarium](https://github.com/Stellarium/stellarium) constellations

- `de421_2001.bsp` : [DE421 ephemeris](https://ipnpr.jpl.nasa.gov/progress_report/42-178/178C.pdf), trimmed to 2001-2050

- `hip8.gz` : [Hipparcos](http://cdsarc.u-strasbg.fr/viz-bin/Cat?V/137D) trimmed to stars of limiting magnitude 8