VizieR

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VizieR

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B/wds/wds The Washington Visual Double Star Catalog (Mason+ 2001-2020)
The Washington Double Star Catalog (main part) (155159 rows)
  recno=124210
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ColumnValue  Explain   (UCD)
_RAJ200019 49 59.9100 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+17 57 26.000 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195019 47 45.3085 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+17 49 48.172 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon055.5795508 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat -4.2093856 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
124210recno 124210  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

WDS19500+1757  (i) WDS name (based on J2000 position) (meta.id;meta.main)
DiscH 4 99  Discoverer Code (1 to 4 letters) and Number (Note 5)   (meta.id)
CompAB  Components when more than 2 (Note 1)   (meta.code.multip)
Obs11782 yr Date of first satisfactory observation (time.epoch)
Obs22018 yr Date of last satisfactory observation (time.epoch)
Nobs 17  Number of Observations (up to 9999) (meta.number)
pa1 90 deg Position Angle at date Obs1 (Note 2)   (pos.posAng)
pa2 83 deg Position Angle at date Obs2 (Note 2)   (pos.posAng)
sep1 21.4 arcsec Separation at date Obs1 (pos.angDistance;src.orbital)
sep2 25.60 arcsec Separation at date Obs12 (pos.angDistance;src.orbital)
mag1 7.990 mag Magnitude of First Component (phot.mag;em.opt)
mag211.07 mag Magnitude of Second Component (phot.mag;em.opt)
SpTypeB7Vp+B9V  Spectral Type (Primary/Secondary) (src.spType)
pmRA1 1 mas/yr Primary Proper Motion (RA) (pos.pm;pos.eq.ra)
pmDE1 -12 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 0 mas/yr Secondary Proper Motion (Dec) (pos.pm;pos.eq.dec)
DM+17 4110  Durchmusterung Number (Note 3)   (meta.id)
NotesNU   [B-Z ] Notes about the binary (Note 4)   (meta.note)
n_RAJ2000    [!P] indicates a position derived from WDS name (meta.note)
RAJ200019 49 59.91 "h:m:s" (i) Right Ascension J2000 (Ep=J2000, hours) (pos.eq.ra;meta.main)
DEJ2000+17 57 26.0 "d:m:s" (i) Declination J2000 (Ep=J2000, degrees) (pos.eq.dec;meta.main)
  
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