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VizieR

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J/ApJS/200/12/table4 CfA4: light curves for 94 type Ia SNe (Hicken+, 2012)
Standard system comparison star photometry (2301 rows)
  recno=2107
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ColumnValue  Explain   (UCD)
_RAJ200012 59 41.38200 "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+28 00 07.9200 "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)
_RAB195012 57 16.63094 "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+28 16 17.3204 "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)
_Glon058.94930748 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+87.97318379 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)
2107recno 2107  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SN2010ai  Supernova identifier (obs.field)
Seq 2  Standard star number (Note 1)   (meta.id;meta.main)
RAJ200012 59 41.382 "h:m:s" (i) Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+28 00 07.92 "d:m:s" (i) Degree of Declination (J2000) (pos.eq.dec;meta.main)
Vmag16.715 mag V band magnitude (phot.mag;em.opt.V)
e_Vmag 0.015 mag The 1σ error in Vmag (stat.error;phot.mag;em.opt.V)
o_Vmag7  Number of Vmag observations (meta.number)
U-B 0.115 mag The (U-B) color index (Note 2)   (phot.color;em.opt.U;em.opt.B)
e_U-B 0.131 mag The 1σ error in U-B (stat.error;phot.color;em.opt.U)
o_U-B1  Number of U-B observations (meta.number)
B-V 0.620 mag The (B-V) color index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.019 mag The 1σ error in B-V (stat.error;phot.color;em.opt.B)
o_B-V7  Number of B-V observations (meta.number)
V-r 0.185 mag The (V-r') color index (phot.color;em.opt.V;em.opt.R)
e_V-r 0.010 mag The 1σ error in V-r (stat.error)
o_V-r7  Number of V-r observations (meta.number)
V-i 0.345 mag The (V-i') color index (phot.color;em.opt.V;em.opt.I)
e_V-i 0.012 mag The 1σ error in V-i (stat.error)
o_V-i7  Number of V-i observations (meta.number)
  
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