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VizieR

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J/AJ/131/2478/table4 M31 and M33 UBVRI photometry (Massey+, 2006)
M31 Catalog (371781 rows)
  recno=79026
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ColumnValue  Explain   (UCD)
_RAJ200000 41 29.8800 "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+41 09 33.000 "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)
_RAB195000 38 45.9874 "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+40 53 06.490 "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)
_Glon120.9189007 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-21.6737277 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)
79026recno 79026  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
n_LGGS   S indicates that spectroscopic data are available in table8 (meta.ref.url)

LGGSJ004129.88+410933.0  (i) LGGS designation, JHHMMSS.ss+DDMMSS.s (meta.id;meta.main)
Vmag23.179 mag Johnson V magnitude (phot.mag;em.opt.V)
e_Vmag 0.232 mag V error (stat.error;phot.mag;em.opt.V)
B-V 1.227 mag Johnson B-V magnitude (phot.color;em.opt.B;em.opt.V)
e_B-V 0.500 mag B-V error (stat.error;phot.color;em.opt.B)
U-B  mag Johnson U-B colour index (phot.color;em.opt.U;em.opt.B)
e_U-B  mag U-B error (stat.error;phot.color;em.opt.U)
V-R 0.953 mag Kron-Cousins V-R colour index (phot.color;em.opt.V;em.opt.R)
e_V-R 0.269 mag V-R error (stat.error;phot.color;em.opt.V)
R-I 0.498 mag Kron-Cousins R-I colour index (phot.color;em.opt.R;em.opt.I)
e_R-I 0.136 mag R-I error (stat.error;phot.color;em.opt.R)
nV 1  Number of V measurements (meta.number)
nB 1  Number of B measurements (meta.number)
nU 0  Number of U measurements (meta.number)
nR 1  Number of R measurements (meta.number)
nI 2  Number of I measurements (meta.number)
SpType   MK Spectral Type (if available) (src.spType)
r_SpType   References for spectal type, in refs.dat file (meta.ref;pos.frame)
RAJ200000 41 29.88 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+41 09 33.0 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  
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