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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=104666
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ColumnValue  Explain   (UCD)
_RAJ200018 18 05.9000 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-12 14 33.300 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 15 17.6455 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-12 15 46.122 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon018.2514511 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat +1.6839282 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
104666recno 104666  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS18181-1215  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscTRN 27  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
CompAB  Components when more than 2 (Note 1)   (meta.code.multip)
Obs12001 yr Date of first satisfactory observation (time.epoch)
Obs22012 yr Date of last satisfactory observation (time.epoch)
Nobs 3  Number of Observations (up to 9999) (meta.number)
pa1 39 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2 40 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 4.7 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 4.80 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 7.45 mag Magnitude of First Component (phot.mag;em.opt)
mag216.00 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeO8Ia  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 0 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  mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2  mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM-12 4980  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 18 05.90 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000-12 14 33.3 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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