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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2014)
The Washington Double Star Catalog (main part) (150551 rows)
  recno=124774
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ColumnValue  Explain   (UCD)
_RAJ200020 09 59.5600 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+10 20 59.000 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195020 07 36.0361 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+10 12 05.026 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon051.4677207 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat-12.2587539 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
124774recno 124774  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS20100+1021  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscA 1199  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
CompAB  Components when more than 2 (Note 1)   (meta.code.multip)
Obs11905 yr Date of first satisfactory observation (time.epoch)
Obs22012 yr Date of last satisfactory observation (time.epoch)
Nobs 20  Number of Observations (up to 9999) (meta.number)
pa1241 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2244 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 2.8 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 2.90 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 9.14 mag Magnitude of First Component (phot.mag;em.opt)
mag211.40 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeA0V  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 -2 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -2 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+09 4425  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)
RAJ200020 09 59.56 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+10 20 59.0 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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