French observatories map & World Observatory Codes (MPC) / Carte des observatoires français & codes des observatoires mondiaux (MPC)

Weekly update "This page has made use of data and/or services provided by the International Astronomical Union's Minor Planet Center. The following list gives the observatory code, longitude (in degrees east of Greenwich) and the parallax constants (rho cos phi' and rho sin phi', where phi' is the geocentric latitude and rho is the geocentric distance in earth radii) for each observatory. " Source: https://www.minorplanetcenter.net/iau/lists/ObsCodesF.html