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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=104672
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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)
104672recno 104672  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)
DiscSS 7  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
CompAH  Components when more than 2 (Note 1)   (meta.code.multip)
Obs11953 yr Date of first satisfactory observation (time.epoch)
Obs22018 yr Date of last satisfactory observation (time.epoch)
Nobs 12  Number of Observations (up to 9999) (meta.number)
pa1268 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2269 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 39.8 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 40.80 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 7.45 mag Magnitude of First Component (phot.mag;em.opt)
mag2 9.80 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeO8Ia+O9.5V  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 0 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 -1 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM-12 4979  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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