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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2014)
The Washington Double Star Catalog (main part) (150551 rows)
  recno=74175
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ColumnValue  Explain   (UCD)
_RAJ200012 21 28.1300 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+21 30 23.500 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195012 18 56.8520 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+21 47 02.106 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon250.8018857 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+81.1598911 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
74175recno 74175  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS12215+2130  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscKU 103  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
Comp   Components when more than 2 (Note 1)   (meta.code.multip)
Obs11892 yr Date of first satisfactory observation (time.epoch)
Obs22015 yr Date of last satisfactory observation (time.epoch)
Nobs 22  Number of Observations (up to 9999) (meta.number)
pa1 2 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2339 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 36.7 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 23.50 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 9.69 mag Magnitude of First Component (phot.mag;em.opt)
mag211.03 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeF8  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 -40 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -8 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2-119 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2-131 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM+22 2462  Durchmusterung Number (Note 3)   (meta.id)
NotesL   [B-Z ] Notes about the binary (Note 4)   (meta.note)
n_RAJ2000    [!P] indicates a position derived from WDS name (meta.note)
RAJ200012 21 28.13 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+21 30 23.5 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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