The Catalog of Components of Double and Multiple Stars, or CCDM, is an astrometric star catalogue of double and multiple stars. It was made by Jean Dommanget and Omer Nys at the Royal Observatory of Belgium in order to provide an input catalogue of stars for the Hipparcos mission. The published first edition of the catalog, released in 1994, has entries for 74,861 components of 34,031 double and multiple stars; the second edition, in 2002, has been expanded to provide entries for 105,838 components of 49,325 double and multiple stars. The catalog lists positions, magnitudes, spectral types, and proper motions for each component.

• Dommanget, J.; Nys, O. (1994). "Catalogue des Composantes d'Étoiles Doubles et Multiples, Première Édition". Communications de l'Observatoire Royal de Belgique, Series A. 115: 1. Bibcode:1994CoORB.115....1D.
• Dommanget, J.; Nys, O. (2002). "Catalogue des Composantes d'Étoiles Doubles et Multiples, Deuxième Édition". Observations et Travaux. 54: 5. Bibcode:2002yCat.1274....0D.

• Dommanget, J.; Nys, O. (2000). "Histoire d'un catalogue: Le CCDM". Observations et Travaux. 52: 26. Bibcode:2000O&T....52...26D.
• Dommanget, J.; Nys, O. (1995). "Catalogue of the components of double and multiple stars (CCDM)- First edition, June 1994". Bulletin d'Information du Centre de Données Stellaires. 46: 3. Bibcode:1995BICDS..46....3D.
• Dommanget, J. (1989). "The CCDM astrometric catalog for double and multiple stars". In Philip, A. G. D.; Upgren, A. R. (eds.). Star Catalogues: A Centennial Tribute to A. N. Vyssotsky. L. Davis Press. p. 77. Bibcode:1989stct.conf...77D.
• Dommanget, J. (1988). "The contribution of the HIPPARCOS mission and of the CCDM catalogue to the study of wide systems". Astrophysics and Space Science. 142: 23. Bibcode:1988Ap&SS.142...23D. doi:10.1007/BF00656178.

• The CCDM, second edition, at VizieR

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