VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

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=1301
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ColumnValue  Explain   (UCD)
_RAJ200006 50 49.8319 "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)
_DEJ2000-00 32 27.175 "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)
_RAB195006 48 16.6694 "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)
_DEB1950-00 28 52.231 "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)
_Glon213.3440651 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-00.3817692 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)
1301recno 1301  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HD 49933  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 5.770 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 2.00   Weight on Vmag (stat.weight)
B-V 0.390 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 2.00   Weight on B-V (stat.weight)
U-B-0.07 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 1.00   Weight on U-B (quarters assigned) (stat.weight)
SC   [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
_RA102.70763 deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
_DE-00.54088 deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)
  
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