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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2020)
The Washington Double Star Catalog (main part) (154613 rows)
  recno=112563
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ColumnValue  Explain   (UCD)
_RAJ200018 55 38.9200 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-31 16 52.300 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195018 52 25.6740 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-31 20 46.421 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon004.8995705 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat-14.5211978 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
112563recno 112563  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS18557-3117  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscPRO 219  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
Comp   Components when more than 2 (Note 1)   (meta.code.multip)
Obs11910 yr Date of first satisfactory observation (time.epoch)
Obs22015 yr Date of last satisfactory observation (time.epoch)
Nobs 6  Number of Observations (up to 9999) (meta.number)
pa1178 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2167 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 12.3 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 12.70 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag111.400 mag Magnitude of First Component (phot.mag;em.opt)
mag211.70 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeA3Ia  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 -16 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 10 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 -17 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM-3116135  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 55 38.92 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000-31 16 52.3 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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