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I/276/catalog Tycho Double Star Catalogue (TDSC) (Fabricius+ 2002)
*Main TDSC catalogue (98482 rows)
  TDSC=8086, m_TDSC=A
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ColumnValue  Explain   (UCD)
_RAJ200003 47 29.065 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEJ2000+24 06 18.86 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_RAB195003 44 30.484 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEB1950+23 57 05.74 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_Glon166.6681 deg Galactic longitude (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat-23.4552 deg Galactic latitude (computed by VizieR, not part of the original data) (pos.galactic.lat)

TDSC 8086   [1,65210] TDSC number for the system (meta.id;meta.main)
m_TDSCA  Component designation (Note 1)   (meta.code.multip)
Nmain 4   [0,11] Number of components in catalog (Note 2)   (meta.number)
Nsup0   [0,4] Number of components in supplement (Note 2)   (meta.number)
RAJ2000056.8711053 deg Right ascension (ICRS), at epoch EpRA (pos.eq.ra;meta.main)
DEJ2000+24.1052389 deg Declination (ICRS) at epoch EpDE (pos.eq.dec;meta.main)
EpRA1991.72 a Epoch of right ascension (time.epoch)
EpDE1991.54 a Epoch of declination (time.epoch)
e_RAJ2000 3 mas Standard error of RA*cos(dec) (stat.error;pos.eq.ra)
e_DEJ2000 4 mas Standard error of Dec (stat.error;pos.eq.dec)
posflg    [ NTH] position flag (Note 3)   (meta.ref;pos.frame)
pmRA  mas/a Proper motion in RA*cos(dec) (pos.pm;pos.eq.ra)
pmDE  mas/a Proper motion in Dec (pos.pm;pos.eq.dec)
e_pmRA  mas/a Standard err of prop mot in RA*cos(dec) (stat.error;pos.pm;pos.eq.ra)
e_pmDE  mas/a Standard err of prop mot in Dec (stat.error;pos.pm;pos.eq.dec)
pmflgX   [ PHX] Proper motion flag (Note 4)   (meta.ref;pos.frame)
BTmag 2.77 mag BT, Tycho blue magnitude (phot.mag;em.opt.B)
e_BTmag 0.01 mag Standard error of BT (stat.error;phot.mag;em.opt.B)
VTmag 2.83 mag VT or Hp magnitude (phot.mag;em.opt.V)
e_VTmag 0.01 mag Standard error of VT or Hp (stat.error;phot.mag;em.opt.V)
magflg    [ AFTBVH] photometry flag (Note 5)   (meta.ref;pos.frame)
TYC11800   [1,9537] TYC1 (Note 6)   (meta.id)
TYC2 2202   [1,12119] TYC2 (Note 6)   (meta.id)
TYC3 1   [1,4] TYC3 (Note 6)   (meta.id)
WDS03475+2406   WDS id for the system (Note 7)   (meta.id)
Note    [ ADNORSTU] a note (Note 8)   (meta.note)
HIP 17702   Hipparcos number from Tycho-2 (meta.id)
CCDM    Hipparcos component identifier (meta.id)
HD 23630   HD identifier (meta.id)
Rcmp    Reference component (meta.code.multip)
PA  deg Position angle (Note 9)   (pos.posAng)
Sep  arcsec Separation (Note 9)   (pos.angDistance)
e_PA  deg Standard error of position angle (stat.error)
Sep*e_PA  mas Sep * e_PA (product of the 2 quantities) (pos.posAng)
e_Sep  mas Standard error of separation (stat.error)

Tycho-2Tycho-2  Display the data of all Tycho-2 stars having this TYC1 and TYC2 numbers (meta.ref.url)
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I/276/supplem Tycho Double Star Catalogue (TDSC) (Fabricius+ 2002)
*TDSC supplement (4777 rows)
  TDSC=8086, m_TDSC=A
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