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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=109357
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ColumnValue  Explain   (UCD)
_RAJ200018 52 49.6100 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+24 53 38.400 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 50 46.0191 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+24 49 53.181 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon055.5083082 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+10.7806632 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
109357recno 109357  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS18528+2453  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscPOU3576  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
Comp   Components when more than 2 (Note 1)   (meta.code.multip)
Obs11905 yr Date of first satisfactory observation (time.epoch)
Obs22015 yr Date of last satisfactory observation (time.epoch)
Nobs 7  Number of Observations (up to 9999) (meta.number)
pa1222 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2215 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 5.6 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 4.60 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag113.30 mag Magnitude of First Component (phot.mag;em.opt)
mag213.80 mag Magnitude of Second Component (phot.mag;em.opt)
SpType   Spectral Type (Primary/Secondary) (src.spType)
pmRA1 -5 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 12 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2 3 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 3 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM   Durchmusterung Number (Note 3)   (meta.id)
Notes    [B-Z ] Notes about the binary (Note 4)   (meta.note)
n_RAJ2000    [!P] indicates a position derived from WDS name (meta.note)
RAJ200018 52 49.61 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+24 53 38.4 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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