Oddsky is open source under the MIT licence. Source on GitHub · Privacy · Terms.
Data: Gaia (ESA/DPAC) · Hipparcos (ESA) · NEOWISE (NASA/JPL, IPAC/IRSA) · the observers of the AAVSO International Database · ASAS-SN · ATLAS · SkyMapper · ZTF (Caltech/IPAC) · TESS (NASA, via MAST). Each case lists exactly which archive rows it used.