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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=109374
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ColumnValue  Explain   (UCD)
_RAJ200018 53 43.5600 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+36 58 18.200 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 51 58.6786 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+36 54 29.244 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon066.9336154 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+15.4941211 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
109374recno 109374  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS18537+3658  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscH 6 3  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)
Obs22012 yr Date of last satisfactory observation (time.epoch)
Nobs 16  Number of Observations (up to 9999) (meta.number)
pa1 20 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2 20 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1174.6 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2175.30 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 5.55 mag Magnitude of First Component (phot.mag;em.opt)
mag2 9.93 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeB2.5V  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 1 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -3 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2 5 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 12 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM+36 3307  Durchmusterung Number (Note 3)   (meta.id)
NotesN   [B-Z ] Notes about the binary (Note 4)   (meta.note)
n_RAJ2000    [!P] indicates a position derived from WDS name (meta.note)
RAJ200018 53 43.56 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+36 58 18.2 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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