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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2014)
The Washington Double Star Catalog (main part) (150803 rows)
  recno=133608
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ColumnValue  Explain   (UCD)
_RAJ200021 07 30.5100 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-15 23 49.000 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195021 04 43.6151 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-15 35 55.186 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon033.6236106 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat-36.9485854 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
133608recno 133608  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS21075-1524  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscUC 4384  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
Comp   Components when more than 2 (Note 1)   (meta.code.multip)
Obs11999 yr Date of first satisfactory observation (time.epoch)
Obs22015 yr Date of last satisfactory observation (time.epoch)
Nobs 5  Number of Observations (up to 9999) (meta.number)
pa1335 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2335 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 8.5 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 8.50 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag114.80 mag Magnitude of First Component (phot.mag;em.opt)
mag215.60 mag Magnitude of Second Component (phot.mag;em.opt)
SpType   Spectral Type (Primary/Secondary) (src.spType)
pmRA1 107 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -25 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2 96 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 2 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM   Durchmusterung Number (Note 3)   (meta.id)
NotesV   [B-Z ] Notes about the binary (Note 4)   (meta.note)
n_RAJ2000    [!P] indicates a position derived from WDS name (meta.note)
RAJ200021 07 30.51 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000-15 23 49.0 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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