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VizieR

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II/50/ubv Photometric Standard Stars (Cousins 1971)
Photometric standard stars (tables II and IV of paper) (2036 rows)
  recno=1592
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ColumnValue  Explain   (UCD)
_RAJ200013 33 00.1081 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000-07 11 41.017 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195013 30 23.1110 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950-06 56 18.103 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon320.7591035 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat+54.2320857 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
1592recno 1592  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HD117833  HD identifier of the star (Cat. III/135) (meta.id;meta.main)
m_HD    [/] '/' indicates a blend with next HD number (meta.code.multip)
Vmag  mag Magnitude in Johnson V filter (phot.mag;em.opt.V)
u_Vmag)   [:)] doubtful value (:), variable value ()) (meta.code.error)
e_Vmag  mag Dispersion on Vmag (stat.error;phot.mag;em.opt.V)
w_Vmag    Weight on Vmag (stat.weight)
B-V  mag Mean Johnson B-V colour index (phot.color;em.opt.B;em.opt.V)
u_B-V    [:)] doubtful value (:), variable value ()) (meta.code.error;phot.color;em.opt.B)
e_B-V  mag Dispersion on B-V (stat.error;phot.color;em.opt.B)
w_B-V    Weight on B-V (stat.weight)
U-B  mag Mean Johnson U-B colour index (phot.color;em.opt.U;em.opt.B)
u_U-B    [:)] doubtful value (:), variable value ()) (meta.code.error;phot.color;em.opt.U)
w_U-B    Weight on U-B (quarters assigned) (stat.weight)
S    [CA*] Source of U-B value: C=Cape only, A=Catalina station (Arizona), *=discordant values. (meta.ref;phot.color;em.opt.U)
NotesS Vir  Remarks (variable star name, binarity) (meta.note)

SimbadSimbad  ask the Simbad data-base about this object
_RA203.25045 deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
_DE-07.19473 deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)
  
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