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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2014)
The Washington Double Star Catalog (main part) (149730 rows)
  recno=105987
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ColumnValue  Explain   (UCD)
_RAJ200018 35 36.4800 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+04 56 09.800 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 33 08.2797 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+04 53 41.515 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon035.5371560 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat +5.7639546 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
105987recno 105987  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS18356+0456  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscBU 643  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
CompAB  Components when more than 2 (Note 1)   (meta.code.multip)
Obs11878 yr Date of first satisfactory observation (time.epoch)
Obs22015 yr Date of last satisfactory observation (time.epoch)
Nobs 13  Number of Observations (up to 9999) (meta.number)
pa1338 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2325 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 8.8 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 13.70 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 6.46 mag Magnitude of First Component (phot.mag;em.opt)
mag212.50 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeA1V  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 30 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -30 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2-174 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 274 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM+04 3801  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 35 36.48 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+04 56 09.8 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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