The Côte d'Azur Observatory (French: Observatoire de la Côte d'Azur, OCA) is a network of astronomical observatories throughout southern France. It originated in 1988 with the merger of two observatories:

1. Nice Observatory
2. Centre de recherches en géodynamique et astrométrie (CERGA)

Cote d'Azure Observatory tested beam combining technology at CHARA array.

Astronomers developed a theory about M-Type asteroids, that may be tested by the planned spacecraft Psyche.

See also

• List of astronomical observatories
• Lunar Laser Ranging Experiment
• OCA-DLR Asteroid Survey