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VizieR

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I/260/ccdmhipn Visual Double Stars in Hipparcos (Dommanget+, 2000)
The Catalogue (41255 rows)
  recno=31488
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Note: Note that the J2000 coordinates are not part of the original catalogue, they were computed from dRAs and dDEs, or from the (rho,theta); their accuracy can be low.

ColumnValue  Explain   (UCD)
_RAJ200018 42 37.920 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+55 32 21.48 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 41 39.790 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+55 29 17.12 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon084.939143 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+23.285312 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
31488recno 31488  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

CCDM18426+5534  (Catalogue of the Components of the Double and Multiple stars) number (Note)   (meta.id;meta.main)
rComp    [B-Z?] Reference component (blank if A) (meta.code.multip)
CompA   [A-Z?] Concerned component (Note)   (meta.code.multip)
Note1    [*&] orbit flag (Note)   (meta.code)
Note2    [@%] astrometric binary (Note)   (meta.code)
Disc   Name of the pair (Discoverer and Number) (Note)   (meta.id)
dRAs 1.93 s Remainder of RA in second of time; (pos.eq.ra;arith.diff)
dDEs -98.4 arcsec Remainder of DE in arcsecond; (pos.angDistance)
r_dRAs10   Source code for positions (Note)   (meta.ref)
Year  yr Year of measured relative position (time.epoch)
theta  deg Position angle (degrees) (Note)   (pos.posAng)
rho  arcsec angular separation of Comp along theta (pos.angDistance)
Obs 3   for A component: number of components; other component: number of measurements (meta.number)
Vmag 5.1 mag magnitude (phot.mag;em.opt.V)
SpA0  spectrum (src.spType)
pmNote*   [*@$#] Origin of the proper motion (Note)   (meta.ref)
pmRA -7 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.ra)
pmDE 21 mas/yr annual proper motion in 0"001 (pos.pm;pos.eq.dec)
DM+55 2107.0  First identification = DM (Harvard system) (Note)   (meta.id)
Name2+55 1189.6  Second identification (Note)   (meta.id)
HD173524  HD designation (meta.id)
m_HD    [*?/0-9 ] second HD (Note Example: 131843/4)   (meta.code.multip)
ADS/BDSB 8751  ADS number (A) or BDS number (B) (meta.id)
m_ADS/BDS    [aN] suffix (a) to an inserted ADS number N = Note in the WDS (meta.code.multip)
n_IDS    [*W] Note on IDS designation (Note)   (meta.note)
IDS18407N5526A  Uncorrected Index designation (1976.5) (equinox 1900) and identification letter; (meta.id)
HIP 91755   Hipparcos Catalogue (I/239) number (meta.id)

RAJ2000280.6580 deg (i) Right Ascension (J2000) computed at CDS (pos.eq.ra;meta.main)
DEJ2000+55.5393 deg (i) Declination (J2000) computed at CDS (pos.eq.dec;meta.main)
  
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