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VizieR

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I/196/annex1 Hipparcos Input Catalogue, Version 2 (Turon+ 1993)
Double and Multiple System Components (32290 rows)
  recno=4980
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ColumnValue  Explain   (UCD)
_RAJ200004 08 32.0600 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+08 26 41.700 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195004 05 49.6889 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+08 18 48.318 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon183.3819696 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-30.4910501 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)
4980recno 4980  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

CCDM04085+0827  (i) CCDM number (Catalogue I/211) (meta.id;meta.main)
rComp   Reference component when different from A (meta.note)
CompA  Component considered (meta.code.multip)
HIC 19328   [1/120313] HIC number as in 'main' file (meta.id)
RAJ200004 08 32.06 "h:m:s" (i) Right Ascension J2000 (hours) (pos.eq.ra;meta.main)
DEJ2000+08 26 41.7 "d:m:s" (i) Declination J2000 (degrees) (pos.eq.dec;meta.main)
Mag 9.5 mag Magnitude (generally V, sometimes photographic for the faintest systems) (phot.mag;em.opt.V)
Obs  a Year of observation of the relative position (time.epoch)
PA  deg [ 0-9.EFPNS]Position angle (pos.posAng)
Sep  arcsec Separation (arcsec) (pos.angDistance)
Note1    [O] O=system with known orbit (meta.note)
Note2    [A] A=astrometric binary (meta.note)
pmRA-0.013 arcsec/a Proper motion in right ascension =15.mu_alpha*cos(delta) (pos.pm;pos.eq.ra)
pmDE-0.006 arcsec/a Proper motion in declination (pos.pm;pos.eq.dec)
DMBD +08 638  DM number. Last char is a suffix to DM, or "*" if HD convention is not followed. (meta.id)
HD    [1/359083] HD/HDE number (meta.id)
AG+08 432  AGK3 or SAO number (meta.id)
IDS04031N0811 A  IDS number (equinox B1900), with component indication. (meta.id)
ADS 3018   [1/17180] ADS number (meta.id)
  
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