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II/50/ubv Photometric Standard Stars (Cousins 1971)
Photometric standard stars (tables II and IV of paper) (2036 rows)
  recno=634
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ColumnValue  Explain   (UCD)
_RAJ200016 05 26.2307 "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)
_DEJ2000-19 48 19.632 "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)
_RAB195016 02 31.4826 "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)
_DEB1950-19 40 13.712 "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)
_Glon353.1928576 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+23.5996295 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)
634recno 634  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HD144217  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 2.505 mag Magnitude in Johnson V filter (phot.mag;em.opt.V)
u_Vmag    [:)] doubtful value (:), variable value ()) (meta.code.error)
e_Vmag 0.008 mag Dispersion on Vmag (stat.error;phot.mag;em.opt.V)
w_Vmag 5.00   Weight on Vmag (stat.weight)
B-V-0.070 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 0.005 mag Dispersion on B-V (stat.error;phot.color;em.opt.B)
w_B-V 4.20   Weight on B-V (stat.weight)
U-B-0.85 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 4.50   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)
Notes   Remarks (variable star name, binarity) (meta.note)

SimbadSimbad  ask the Simbad data-base about this object
_RA241.35929 deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
_DE-19.80545 deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)
  
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