Strasbourg astronomical Data Center

The Strasbourg astronomical Data Center (CDS) is a data center dedicated to the collection and worldwide distribution of astronomical data and related information. It is located at the Strasbourg Astronomical Observatory, France.

Key numbers
  • 18,239,413 SIMBAD objects
  • 25,280 VizieR catalogs
  • 1,273 HiPS
  • 36,411 MOCs
  • 437,266 biblio. references
  • 25,702 acronyms

Publishing data at CDS

The CDS strongly relies on data published in various astronomical and astrophysical journals to update databases like SIMBAD and VizieR.

Authors of these articles can help the CDS team to get and publish their data.

See the Data publication page to get some best practices and tools to help you.

Accessing CDS data

The CDS gives access to many astronomical data such as objects, catalogues, images and spectra.

Several services are available to search for and to get these data. Here are the main services:

Need more information?

You can find information about the CDS and its activities in the About section.

Various help material is available in the Help section of this website.

Specifically about how to access data, Tutorials, services documentations and tools and API documentation are available. You can also find more precise help on a specific service on its own website, or on a specific tool in its GitHub repository (if any).

You might also find answers in the Frequently Asked Questions page.

If you still need help, do not hesitate to send us an email.

CDS on the Web