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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=97417
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ColumnValue  Explain   (UCD)
_RAJ200017 12 07.7800 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+45 39 57.600 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195017 10 40.8167 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+45 43 36.509 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon071.3367765 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+35.9659226 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
97417recno 97417  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS17121+4540  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscKUI 79  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
CompAB,C  Components when more than 2 (Note 1)   (meta.code.multip)
Obs11934 yr Date of first satisfactory observation (time.epoch)
Obs22013 yr Date of last satisfactory observation (time.epoch)
Nobs 6  Number of Observations (up to 9999) (meta.number)
pa1316 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2343 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 36.8 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2157.40 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 9.52 mag Magnitude of First Component (phot.mag;em.opt)
mag213.30 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeK5  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 22 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1-162 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 0 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM   Durchmusterung Number (Note 3)   (meta.id)
NotesNL P   [B-Z ] Notes about the binary (Note 4)   (meta.note)
n_RAJ2000    [!P] indicates a position derived from WDS name (meta.note)
RAJ200017 12 07.78 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+45 39 57.6 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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