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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2014)
The Washington Double Star Catalog (main part) (149682 rows)
  recno=103424
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ColumnValue  Explain   (UCD)
_RAJ200018 15 33.4100 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+44 16 59.600 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 14 04.6420 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+44 15 54.142 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon071.8272463 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+24.6903853 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
103424recno 103424  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS18156+4417  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscES 1420  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
CompAC  Components when more than 2 (Note 1)   (meta.code.multip)
Obs11915 yr Date of first satisfactory observation (time.epoch)
Obs22015 yr Date of last satisfactory observation (time.epoch)
Nobs 10  Number of Observations (up to 9999) (meta.number)
pa1 7 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2 9 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 19.6 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 14.60 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag110.22 mag Magnitude of First Component (phot.mag;em.opt)
mag214.50 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeA0  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 -3 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 13 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2 0 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)
Notes    [B-Z ] Notes about the binary (Note 4)   (meta.note)
n_RAJ2000    [!P] indicates a position derived from WDS name (meta.note)
RAJ200018 15 33.41 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+44 16 59.6 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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