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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=12502
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ColumnValue  Explain   (UCD)
_RAJ200009 18 50.6500 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+36 48 09.500 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195009 15 44.3442 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+37 00 55.760 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon186.8101784 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+44.4711060 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)
12502recno 12502  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

CCDM09188+3648  (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 45688   [1/120313] HIC number as in 'main' file (meta.id)
RAJ200009 18 50.65 "h:m:s" (i) Right Ascension J2000 (hours) (pos.eq.ra;meta.main)
DEJ2000+36 48 09.5 "d:m:s" (i) Declination J2000 (degrees) (pos.eq.dec;meta.main)
Mag 3.9 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-0.034 arcsec/a Proper motion in right ascension =15.mu_alpha*cos(delta) (pos.pm;pos.eq.ra)
pmDE-0.126 arcsec/a Proper motion in declination (pos.pm;pos.eq.dec)
DMBD +37 1965  DM number. Last char is a suffix to DM, or "*" if HD convention is not followed. (meta.id)
HD 80081   [1/359083] HD/HDE number (meta.id)
AG   AGK3 or SAO number (meta.id)
IDS09126N3714 A  IDS number (equinox B1900), with component indication. (meta.id)
ADS 7292   [1/17180] ADS number (meta.id)
  
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