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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=25879
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ColumnValue  Explain   (UCD)
_RAJ200019 30 45.3800 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+27 57 54.800 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195019 28 44.3157 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+27 51 32.527 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon062.1182077 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 +4.5673486 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)
25879recno 25879  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

CCDM19307+2758  (i) CCDM number (Catalogue I/211) (meta.id;meta.main)
rComp   Reference component when different from A (meta.note)
CompB  Component considered (meta.code.multip)
HIC 95951   [1/120313] HIC number as in 'main' file (meta.id)
RAJ200019 30 45.38 "h:m:s" (i) Right Ascension J2000 (hours) (pos.eq.ra;meta.main)
DEJ2000+27 57 54.8 "d:m:s" (i) Declination J2000 (degrees) (pos.eq.dec;meta.main)
Mag 5.4 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 54 deg [ 0-9.EFPNS]Position angle (pos.posAng)
Sep 34.2 arcsec Separation (arcsec) (pos.angDistance)
Note1O   [O] O=system with known orbit (meta.note)
Note2    [A] A=astrometric binary (meta.note)
pmRA-0.001 arcsec/a Proper motion in right ascension =15.mu_alpha*cos(delta) (pos.pm;pos.eq.ra)
pmDE-0.005 arcsec/a Proper motion in declination (pos.pm;pos.eq.dec)
DMBD +27 3411  DM number. Last char is a suffix to DM, or "*" if HD convention is not followed. (meta.id)
HD183914   [1/359083] HD/HDE number (meta.id)
AG+27 1970  AGK3 or SAO number (meta.id)
IDS19267N2745 B  IDS number (equinox B1900), with component indication. (meta.id)
ADS12540   [1/17180] ADS number (meta.id)
  
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