Warning: on March 2nd at 09:00 UTC, some maintenance activities will be performed on our system. Some services, including the ephemeris and APIs, may be temporarily disrupted or unavailable.  

Warning: on March 6th at 09:00 UTC, some maintenance activities will be performed on our system. Some services, may be temporarily disrupted or unavailable.  

Warning: on April 13th at 09:00 UTC, some maintenance activities will be performed on our system. Some services may be temporarily unavailable.  

Warning: on May 16th at 09:00 UTC, some maintenance activities will be performed on our system. The portal may be temporarily unavailable.  

Warning: we are performing some maintenance activities on our system. Some services, including the ephemeris and APIs, may be unavailable.  

Warning: the Observation Planning Tool is currently under maintenance. It will be accessible as soon as possible.

Warning. Due to some maintenance activities, some tools and services may not be available.

The May monthly update is still ongoing. Some objects, may be temporarily unavailable.

The portal is under maintenance. Some of its features may not be available. Sorry for the inconvenience.