Description of Dataset:
This catalogue is the only complete list of all known double and
multiple systems (18644) of which at least one component was
identified in the Hipparcos final catalog in July 1997 (Cat. <I/239>),
including the 2994 systems newly discovered by the satellite, as well
as the 155 new astrometric orbital pairs also discovered by the
satellite (Dommanget, 2000Obs...120..202D), and also the 38 new
astrometric binaries components of known systems. It may be considered
as a subset of the CCDM as existing in 1998 of which a first edition
appeared in 1994 (Cat. <I/211>), and of which a second edition
containing more than 45,000 systems is being prepared for publication.
Consequently, the format of this list is that of the CCDM for which
all information may be found in the introduction of its 1994 published
version (as file I/211/ccdm.doc)The format of this catalogue is the same as the CCDM (Cat. <I/211>)See Also:
| Field | Label | Units | Format | Definition |
|---|---|---|---|---|
| 1 | CCDM | --- | A10 | *(Catalogue of the Components of the Double and Multiple stars) number(a) |
| 2 | rComp | --- | A1 | [B-Z?] Reference component (blank if A) |
| 3 | Comp | --- | A1 | *[A-Z?] Concerned component(b) |
| 4 | Note1 | --- | A1 | *[*&] orbit flag(c) |
| 5 | Note2 | --- | A1 | *[@%] astrometric binary(d) |
| 6 | Disc | --- | A7 | *Name of the pair (Discoverer and Number)(e) |
| 7 | dRAs | s | F7.2 | ? Remainder of RA in second of time; |
| 8 | dDEs | arcsec | F7.1 | ? Remainder of DE in arcsecond; |
| 9 | r_dRAs | --- | I2 | *? Source code for positions(f) |
| 10 | Year | yr | I4 | ? Year of measured relative position |
| 11 | theta | deg | A3 | *Position angle (degrees)(g) |
| 12 | rho | arcsec | F6.1 | ? angular separation of Comp along theta |
| 13 | Obs | --- | I2 | ? for A component: number of components; other component: number of measurements |
| 14 | Vmag | mag | F4.1 | ? magnitude |
| 15 | Sp | --- | A2 | spectrum |
| 16 | pmNote | --- | A1 | *[*@$#] Origin of the proper motion(h) |
| 17 | pmRA | mas/yr | I5 | ? annual proper motion in 0"001 |
| 18 | pmDE | mas/yr | I5 | ? annual proper motion in 0"001 |
| 19 | DM | --- | A10 | *First identification = DM (Harvard system)(i) |
| 20 | Name2 | --- | A10 | *Second identification(i) |
| 21 | HD | --- | A6 | HD designation |
| 22 | m_HD | --- | A2 | *[*?/0-9 ] second HD (Example: 131843/4)(j) |
| 23 | ADS/BDS | --- | A6 | ADS number (A) or BDS number (B) |
| 24 | m_ADS/BDS | --- | A1 | [aN] suffix (a) to an inserted ADS number N = Note in the WDS |
| 25 | n_IDS | --- | A1 | *[*W] Note on IDS designation(k) |
| 26 | IDS | --- | A11 | Uncorrected Index designation (1976.5) (equinox 1900) and identification letter; |
| 27 | HIP | --- | I6 | ? Hipparcos Catalogue (I/239) number |
(a) The CCDM number is made with RA(2000) limited to 0.1 minute of time (HHMMm) and Dec(2000) limited to 1 minute of a degree (+DDMM). Full details about the construction of the CCDM number are given in the publication. | |
(b) In one record the sign '?' signs appear (for CCDM 07366-1428) | |
(c) * : orbit in the personal catalogue of J.Dommanget (1982; partially updated to 1994) & : orbit in the WDS | |
(d) the symbols are: @ = astrometric binary % = astrometric binary discovered by Hipparcos | |
(e) New discoverer names are: HDS = Hipparcos new astrometric binary KZA = S.M. Kazeza LYS = L. Louys, NYS = O. Nys, ONL = Occultation News Letter | |
(f) The new references are: 47 = ORB (Carte du Ciel) 48 = Bordeaux (Soulie) 81 = HIC (Cat. I/196) 82 = HIP (Cat. I/239) | |
(g) The following letters are sometimes used to indicate an approximate location of the secondary component: 'N' (to the North) 'NF'(to the North and following) (first quadrant) 'F' (following) 'SF'(to the South and following) (second quadrant) 'S' (to the South) 'SP'(to the South and preceding) (third quadrant) 'P' (preceding) 'NP'(to the North and preceding) (fourth quadrant) | |
(h) the symbols are as follows: *: not the pm from the Index; @: pm from the HIC; $: pm = pm(B/A); #: the pm is quite different from the other components' motion, but the exact values are not available. | |
(i) the codes are as follows: .0 = BD .6 = AGK2/3 .2 = CD .8 = SAO .4 = CPD The suffixes "a" and "b" following some DM designations appear in place of the dot. | |
(j) the symbols are: / = second HD identifier ? = questionable identification * = possible inversion of HD components | |
(k) The * means that the Index number is built for a new component or system; The W means that the IDS is a WDS number (i.e. based on J2000 position, whereas the IDS is based on B1900 positions) |