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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2020)
The Washington Double Star Catalog (main part) (154448 rows)
  recno=104178
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ColumnValue  Explain   (UCD)
_RAJ200017 55 14.1700 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+25 56 37.300 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195017 53 12.8997 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+25 57 02.937 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon051.3100419 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat+23.1899491 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
104178recno 104178  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS17552+2557  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscTDT 570  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
Comp   Components when more than 2 (Note 1)   (meta.code.multip)
Obs11991 yr Date of first satisfactory observation (time.epoch)
Obs21991 yr Date of last satisfactory observation (time.epoch)
Nobs 1  Number of Observations (up to 9999) (meta.number)
pa1 28 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2 28 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 2.7 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 2.70 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag111.660 mag Magnitude of First Component (phot.mag;em.opt)
mag212.71 mag Magnitude of Second Component (phot.mag;em.opt)
SpType   Spectral Type (Primary/Secondary) (src.spType)
pmRA1 -3 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -9 mas/yr Primary Proper Motion (Dec) (pos.pm;pos.eq.dec)
pmRA2 -3 mas/yr Secondary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE2 -9 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM   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)
RAJ200017 55 14.17 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+25 56 37.3 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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