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I/274/ccdm CCDM (Catalog of Components of Double & Multiple stars (Dommanget+ 2002)
The Catalogue of Components of Double and Multiple (105838 rows)
  CCDM===12492+8325
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Note: the J2000 coordinates are not part of the original catalogue; their accuracy can be low, see the CooFlag column

ColumnValue  Explain   (UCD)
_RAJ200012 49 13.6 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEJ2000+83 24 46 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_RAB195012 48 46.1 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEB1950+83 41 05 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_Glon123.0082 deg Galactic longitude (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat+33.7150 deg Galactic latitude (computed by VizieR, not part of the original data) (pos.galactic.lat)

CCDM12492+8325  (Catalogue of the Components of the Double and Multiple stars) identifier (Note 1)   (meta.id;meta.main)
rComp    [B-Z?] Reference component (blank if A) (Note 6)   (meta.code.multip)
CompA   [A-Z?] Concerned component (Note 6)   (meta.code.multip)
Note1    [*&] *=orbit in Dommanget's personal catalog &=orbit WDS 1994 (Note 2)   (meta.code)
Note2    [@%] @ = astrometric binary % = astrometric binary from Hipparcos (meta.code)
Disc   Name of the pair (Discoverer and Number) (Note 3)   (meta.id)
dRAs 1.60 s Remainder of RA in second of time (J2000) (pos.eq.ra;arith.diff)
dDEs -13.7 arcsec Remainder of DE in arcsecond (J2000) (pos.eq.dec;arith.diff)
r_dRAs10   Source code for positions, in refpos.dat (meta.ref;pos.frame)
Year  yr Year of measured relative position (time.epoch;arith.diff)
theta  deg Position angle (degrees) (Note 4)   (pos.posAng)
rho  arcsec angular separation of Comp along theta (pos.angDistance)
Obs 2   for component A: number of components; other component: number of measurements (meta.number)
Vmag 5.3 mag magnitude (phot.mag;em.opt)
SpA2  Spectral type (src.spType)
pmNote*   [*@$#] Origin of the proper motion (Note 7)   (meta.ref;pos.pm;pos.frame)
pmRA -29 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.ra)
pmDE 15 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.dec)
DM+84 290.0  First identification = DM (Harvard system) (Note 5)   (meta.id)
Name2+83 328.6  Second identification (Note 5)   (meta.id)
HD112028  HD identifier (meta.id)
m_HD    [/0-9 ?*] second HD (Example: 131843/4) (Note 8)   (meta.code.multip)
ADS/BDSA 8682  ADS (A) or BDS identifier (B) (meta.id)
m_ADS/BDS    [aN] suffix (a) to an inserted ADS identifier, or a note (N) exists in the Index. (meta.code.multip)
n_IDS    [*W] The * means that the Index identifier was built for a new component or system; the W indicates a WDS (1994) identifier (meta.note)
IDS12484N8357A  Original Index (1976.5) or WDS (1994) identifier, based on equinox 1900 (meta.id)
HIC 62572   Hipparcos Input Catalogue (Turon et al., Cat. I/196) identifier (also HIP I/239) (meta.id)

CooFlag0   [0/4] Indicator position computation (Note 9)   (meta.code.qual)
RAJ2000192.3067 deg Right Ascension J2000 (degrees) (Note 9)   (pos.eq.ra;meta.main)
DEJ2000+83.4129 deg Declination J2000 (degrees) (Note 9)   (pos.eq.dec;meta.main)
ColumnValue  Explain   (UCD)
_RAJ200012 49 07.0 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEJ2000+83 25 04 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_RAB195012 48 38.7 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEB1950+83 41 22 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_Glon123.0119 deg Galactic longitude (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat+33.7101 deg Galactic latitude (computed by VizieR, not part of the original data) (pos.galactic.lat)

CCDM12492+8325  (Catalogue of the Components of the Double and Multiple stars) identifier (Note 1)   (meta.id;meta.main)
rComp    [B-Z?] Reference component (blank if A) (Note 6)   (meta.code.multip)
CompB   [A-Z?] Concerned component (Note 6)   (meta.code.multip)
Note1    [*&] *=orbit in Dommanget's personal catalog &=orbit WDS 1994 (Note 2)   (meta.code)
Note2    [@%] @ = astrometric binary % = astrometric binary from Hipparcos (meta.code)
DiscSTF1694  Name of the pair (Discoverer and Number) (Note 3)   (meta.id)
dRAs -5.01 s Remainder of RA in second of time (J2000) (pos.eq.ra;arith.diff)
dDEs 4.2 arcsec Remainder of DE in arcsecond (J2000) (pos.eq.dec;arith.diff)
r_dRAs10   Source code for positions, in refpos.dat (meta.ref;pos.frame)
Year1832 yr Year of measured relative position (time.epoch;arith.diff)
theta326 deg Position angle (degrees) (Note 4)   (pos.posAng)
rho 21.6 arcsec angular separation of Comp along theta (pos.angDistance)
Obs18   for component A: number of components; other component: number of measurements (meta.number)
Vmag 5.8 mag magnitude (phot.mag;em.opt)
SpA0  Spectral type (src.spType)
pmNote*   [*@$#] Origin of the proper motion (Note 7)   (meta.ref;pos.pm;pos.frame)
pmRA -10 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.ra)
pmDE 17 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.dec)
DM+84 289.0  First identification = DM (Harvard system) (Note 5)   (meta.id)
Name2+83 327.6  Second identification (Note 5)   (meta.id)
HD112014  HD identifier (meta.id)
m_HD    [/0-9 ?*] second HD (Example: 131843/4) (Note 8)   (meta.code.multip)
ADS/BDSA 8682  ADS (A) or BDS identifier (B) (meta.id)
m_ADS/BDSN   [aN] suffix (a) to an inserted ADS identifier, or a note (N) exists in the Index. (meta.code.multip)
n_IDS    [*W] The * means that the Index identifier was built for a new component or system; the W indicates a WDS (1994) identifier (meta.note)
IDS12484N8357B  Original Index (1976.5) or WDS (1994) identifier, based on equinox 1900 (meta.id)
HIC 62561   Hipparcos Input Catalogue (Turon et al., Cat. I/196) identifier (also HIP I/239) (meta.id)

CooFlag0   [0/4] Indicator position computation (Note 9)   (meta.code.qual)
RAJ2000192.2791 deg Right Ascension J2000 (degrees) (Note 9)   (pos.eq.ra;meta.main)
DEJ2000+83.4178 deg Declination J2000 (degrees) (Note 9)   (pos.eq.dec;meta.main)
  

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