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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===21483-4718
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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)
_RAJ200021 48 15.8 "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)
_DEJ2000-47 18 13 "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)
_RAB195021 45 01.2 "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)
_DEB1950-47 31 56 "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)
_Glon350.8781 deg Galactic longitude (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat-49.1061 deg Galactic latitude (computed by VizieR, not part of the original data) (pos.galactic.lat)

CCDM21483-4718  (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 -2.24 s Remainder of RA in second of time (J2000) (pos.eq.ra;arith.diff)
dDEs -13.1 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 5.7 mag magnitude (phot.mag;em.opt)
SpG5  Spectral type (src.spType)
pmNote*   [*@$#] Origin of the proper motion (Note 7)   (meta.ref;pos.pm;pos.frame)
pmRA 164 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.ra)
pmDE -295 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.dec)
DM-4713928.2  First identification = DM (Harvard system) (Note 5)   (meta.id)
Name2 230846.8  Second identification (Note 5)   (meta.id)
HD207129  HD identifier (meta.id)
m_HD    [/0-9 ?*] second HD (Example: 131843/4) (Note 8)   (meta.code.multip)
ADS/BDS   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)
IDS21418S4746A  Original Index (1976.5) or WDS (1994) identifier, based on equinox 1900 (meta.id)
HIC107649   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)
RAJ2000327.0657 deg Right Ascension J2000 (degrees) (Note 9)   (pos.eq.ra;meta.main)
DEJ2000-47.3036 deg Declination J2000 (degrees) (Note 9)   (pos.eq.dec;meta.main)
ColumnValue  Explain   (UCD)
_RAJ200021 48 14.5 "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)
_DEJ2000-47 16 58 "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)
_RAB195021 45 00.6 "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)
_DEB1950-47 30 55 "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)
_Glon350.9101 deg Galactic longitude (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat-49.1074 deg Galactic latitude (computed by VizieR, not part of the original data) (pos.galactic.lat)

CCDM21483-4718  (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)
DiscBSO 15  Name of the pair (Discoverer and Number) (Note 3)   (meta.id)
dRAs -3.46 s Remainder of RA in second of time (J2000) (pos.eq.ra;arith.diff)
dDEs 61.7 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)
Year1931 yr Year of measured relative position (time.epoch;arith.diff)
theta356 deg Position angle (degrees) (Note 4)   (pos.posAng)
rho 55.0 arcsec angular separation of Comp along theta (pos.angDistance)
Obs18   for component A: number of components; other component: number of measurements (meta.number)
Vmag 8.7 mag magnitude (phot.mag;em.opt)
Sp   Spectral type (src.spType)
pmNote*   [*@$#] Origin of the proper motion (Note 7)   (meta.ref;pos.pm;pos.frame)
pmRA 53 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.ra)
pmDE -9 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.dec)
DM-4713929.2  First identification = DM (Harvard system) (Note 5)   (meta.id)
Name2 230845.8  Second identification (Note 5)   (meta.id)
HD   HD identifier (meta.id)
m_HD    [/0-9 ?*] second HD (Example: 131843/4) (Note 8)   (meta.code.multip)
ADS/BDS   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)
IDS21418S4746B  Original Index (1976.5) or WDS (1994) identifier, based on equinox 1900 (meta.id)
HIC    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)
RAJ2000327.0606 deg Right Ascension J2000 (degrees) (Note 9)   (pos.eq.ra;meta.main)
DEJ2000-47.2829 deg Declination J2000 (degrees) (Note 9)   (pos.eq.dec;meta.main)
  

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