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J/AJ/131/2478/table4 M31 and M33 UBVRI photometry (Massey+, 2006)
M31 Catalog (371781 rows)
  recno=184307
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ColumnValue  Explain   (UCD)
_RAJ200000 42 43.6900 "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+40 51 59.800 "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 39 59.5980 "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 35 34.238 "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)
_Glon121.1563976 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-21.9751092 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)
184307recno 184307  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)

LGGSJ004243.69+405159.8  (i) LGGS designation, JHHMMSS.ss+DDMMSS.s (meta.id;meta.main)
Vmag21.226 mag Johnson V magnitude (phot.mag;em.opt.V)
e_Vmag 0.084 mag V error (stat.error;phot.mag;em.opt.V)
B-V 0.237 mag Johnson B-V magnitude (phot.color;em.opt.B;em.opt.V)
e_B-V 0.121 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 1.149 mag Kron-Cousins V-R colour index (phot.color;em.opt.V;em.opt.R)
e_V-R 0.093 mag V-R error (stat.error;phot.color;em.opt.V)
R-I  mag Kron-Cousins R-I colour index (phot.color;em.opt.R;em.opt.I)
e_R-I  mag R-I error (stat.error;phot.color;em.opt.R)
nV 2  Number of V measurements (meta.number)
nB 2  Number of B measurements (meta.number)
nU 0  Number of U measurements (meta.number)
nR 4  Number of R measurements (meta.number)
nI 0  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 42 43.69 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+40 51 59.8 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  
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