VizieR

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VizieR

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J/AJ/154/259/table2 Fundamental parameters of Tycho-2 & TGAS stars (Stevens+, 2017)
Catalog Photometry for 1600080 Tycho-2 Stars in Initial Iterative-color Technique Sample (524221 rows)
  recno=498488
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ColumnValue  Explain   (UCD)
_RAJ200006 30 40.3509336 "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)
_DEJ2000-70 52 40.928016 "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 31 17.3701691 "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)
_DEB1950-70 50 25.915726 "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)
_Glon281.4122437720 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-27.2068062526 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)
498488recno 498488  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC9181-927-1  (i) Tycho-2 identifier (TYC FFFF-NNNNN-N) (meta.id;meta.main)
RAJ2000097.66812889 deg (i) Right Ascension in decimal degrees (J2000) (pos.eq.ra;meta.main)
DEJ2000-70.87803556 deg (i) Declination in decimal degrees (J2000) (pos.eq.dec;meta.main)
BTmag 10.947 mag [3.296/16.227] Tycho-2 catalog BT band magnitude (Note 1)   (phot.mag;em.opt.B)
e_BTmag 0.054 mag [0.014/1.686] Uncertainty in BTmag (stat.error;phot.mag;em.opt.B)
VTmag10.559 mag [2.139/14.44] Tycho-2 catalog VT band magnitude (Note 1)   (phot.mag;em.opt.V)
e_VTmag 0.052 mag [0.009/0.899] Uncertainty in BTmag (stat.error;phot.mag;em.opt.V)
Jmag 9.859 mag [-0.245/15.767] 2MASS J band magnitude (Note 2)   (phot.mag;em.IR.J)
e_Jmag 0.023 mag [0.016/9.998] Uncertainty in Jmag (stat.error;phot.mag;em.IR.J)
Hmag 9.679 mag [-1.034/15.297] 2MASS H band magnitude (Note 2)   (phot.mag;em.IR.H)
e_Hmag 0.026 mag [0.013/9.998] Uncertainty in Hmag (stat.error;phot.mag;em.IR.H)
Ksmag 9.580 mag [-1.162/15.015] 2MASS Ks band magnitude (Note 2)   (phot.mag;em.IR.K)
e_Ksmag 0.021 mag [0.011/9.998] Uncertainty in Ksmag (stat.error;phot.mag;em.IR.K)
Bmag  mag [2.567/13.449] B band magnitude (Note 3)   (phot.mag;em.opt.B)
e_Bmag  mag Uncertainty in Bmag (stat.error;phot.mag;em.opt.B)
Vmag  mag [2.036/12.655] V band magnitude (Note 3)   (phot.mag;em.opt.V)
e_Vmag  mag [0/0.7] Uncertainty in Vmag (stat.error;phot.mag;em.opt.V)
ymag  mag [2.19/12.804] Stromgren y band magnitude (Note 4)   (phot.mag;em.opt.V)
e_ymag  mag [0/1.098] Uncertainty in ymag (stat.error;phot.mag;em.opt.V)
bmag  mag [3.066/13.204] Stromgren b band magnitude (Note 4)   (phot.mag;em.opt.B)
e_bmag  mag [0/1.11186] Uncertainty in bmag (stat.error;phot.mag;em.opt.B)
  
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