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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2020)
The Washington Double Star Catalog (main part) (154541 rows)
  recno=129119
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ColumnValue  Explain   (UCD)
_RAJ200020 16 50.1300 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+39 41 38.000 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195020 15 02.1564 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+39 32 17.889 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon077.1002709 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat +2.4025293 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
129119recno 129119  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS20168+3942  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscDAM1040  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
CompFG  Components when more than 2 (Note 1)   (meta.code.multip)
Obs11998 yr Date of first satisfactory observation (time.epoch)
Obs22015 yr Date of last satisfactory observation (time.epoch)
Nobs 4  Number of Observations (up to 9999) (meta.number)
pa1225 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2225 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 3.6 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 3.50 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag114.000 mag Magnitude of First Component (phot.mag;em.opt)
mag215.10 mag Magnitude of Second Component (phot.mag;em.opt)
SpType   Spectral Type (Primary/Secondary) (src.spType)
pmRA1 11 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -1 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2  mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2  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)
RAJ200020 16 50.13 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+39 41 38.0 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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