Created: February 12, 2024 - 01:00 CET
Updated: February 20, 2024 - 23:04 CET

Reading time: 1 minute

You can create an personnal CDS account to improve your experience with CDS services.

Get started

You will find the CDS login toolbar on various service pages, in the top right corner, for example on the CDS portal.

Registering is free, and minimal information is asked for to create a new account.

Registered users must follow these terms and conditions.

Post annotations

You can use your account to post annotations on SIMBAD objects or VizieR catalogues. These annotations can be public comments on astronomical objects or datasets, or private error notifications sent to the CDS team.

Anonymous users are limited to 100MB storage space for uploading data at CDS. The CDS login provides you with an expanded 500MB storage space for the Xmatch service, as can be seen in My Data.
You can also get email notifications when your Xmatch jobs are completed.

Your login enables you to get notifications when new papers citing your favourite objects are published, thanks to the SimWatch service.