Gaia UBVRI Lookup

Positions, proper motions and Gaia's synthetic Johnson-Cousins U B V R I magnitudes for any patch of sky, ready for photometric calibration with small telescopes. Free for non-commercial use.

Using it from a program

Cone search, returning JSON, CSV or VOTable:

IVOA Simple Cone Search (for TOPCAT, Aladin and other Virtual Observatory tools; RA, DEC, SR in degrees):

Limits: radius up to 60 arcmin, 50000 rows per answer (nearest first), 60 requests per minute. Interactive API description: /docs. Coverage: checking…

What is in it

• Astrometry for every Gaia DR3 star brighter than G = 19.5: position, parallax, proper motion, G, BP−RP and RUWE.
• Synthetic photometry in Johnson-Cousins U, B, V, R, I for the ~220 million stars with Gaia XP spectra, with errors; ok_X = 1 marks magnitudes inside the range Gaia validated for that band.
• Positions are ICRS at epoch J2016.0; apply the proper motions for other epochs.