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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2020)
The Washington Double Star Catalog (main part) (152448 rows)
  recno=97238
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ColumnValue  Explain   (UCD)
_RAJ200016 55 32.5400 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-21 34 10.200 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195016 52 33.5078 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950-21 29 25.427 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon359.7214942 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+13.4912377 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
97238recno 97238  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS16555-2134  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscBU 241  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
Comp   Components when more than 2 (Note 1)   (meta.code.multip)
Obs11874 yr Date of first satisfactory observation (time.epoch)
Obs22018 yr Date of last satisfactory observation (time.epoch)
Nobs 50  Number of Observations (up to 9999) (meta.number)
pa1314 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2 31 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 0.5 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 0.30 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 7.090 mag Magnitude of First Component (phot.mag;em.opt)
mag2 7.83 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeB9III  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 -7 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -6 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2 -7 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 -6 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM-21 4449  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)
RAJ200016 55 32.54 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000-21 34 10.2 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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