VizieR

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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=45747
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ColumnValue  Explain   (UCD)
_RAJ200000 40 28.1700 "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 49 52.700 "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 37 44.6470 "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 33 25.417 "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)
_Glon120.6945936 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-21.9927902 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)
45747recno 45747  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)

LGGSJ004028.17+404952.7  (i) LGGS designation, JHHMMSS.ss+DDMMSS.s (meta.id;meta.main)
Vmag22.157 mag Johnson V magnitude (phot.mag;em.opt.V)
e_Vmag 0.046 mag V error (stat.error;phot.mag;em.opt.V)
B-V 0.640 mag Johnson B-V magnitude (phot.color;em.opt.B;em.opt.V)
e_B-V 0.073 mag B-V error (stat.error;phot.color;em.opt.B)
U-B-0.199 mag Johnson U-B colour index (phot.color;em.opt.U;em.opt.B)
e_U-B 0.070 mag U-B error (stat.error;phot.color;em.opt.U)
V-R 0.396 mag Kron-Cousins V-R colour index (phot.color;em.opt.V;em.opt.R)
e_V-R 0.121 mag V-R error (stat.error;phot.color;em.opt.V)
R-I 0.899 mag Kron-Cousins R-I colour index (phot.color;em.opt.R;em.opt.I)
e_R-I 0.112 mag R-I error (stat.error;phot.color;em.opt.R)
nV 3  Number of V measurements (meta.number)
nB 2  Number of B measurements (meta.number)
nU 3  Number of U measurements (meta.number)
nR 1  Number of R measurements (meta.number)
nI 3  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 40 28.17 "h:m:s" (i) Right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+40 49 52.7 "d:m:s" (i) Declination (J2000) (pos.eq.dec;meta.main)
  
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