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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=29874
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ColumnValue  Explain   (UCD)
_RAJ200022 07 00.6700 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+25 20 42.300 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195022 04 40.8293 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+25 06 00.477 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon082.2600180 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-24.2585044 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)
29874recno 29874  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

CCDM22070+2520  (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)
HIC109176   [1/120313] HIC number as in 'main' file (meta.id)
RAJ200022 07 00.67 "h:m:s" (i) Right Ascension J2000 (hours) (pos.eq.ra;meta.main)
DEJ2000+25 20 42.3 "d:m:s" (i) Declination J2000 (degrees) (pos.eq.dec;meta.main)
Mag 4.0 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 0.299 arcsec/a Proper motion in right ascension =15.mu_alpha*cos(delta) (pos.pm;pos.eq.ra)
pmDE 0.029 arcsec/a Proper motion in declination (pos.pm;pos.eq.dec)
DMBD +24 4533  DM number. Last char is a suffix to DM, or "*" if HD convention is not followed. (meta.id)
HD210027   [1/359083] HD/HDE number (meta.id)
AG+25 2653  AGK3 or SAO number (meta.id)
IDS22023N2452 A  IDS number (equinox B1900), with component indication. (meta.id)
ADS    [1/17180] ADS number (meta.id)
  
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