VizieR

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VizieR

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II/187A/photo 30 Doradus OB Associations (Parker 1992)
Positional and photometric data (tables 4 and 5) (2395 rows)
  recno=499
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ColumnValue  Explain   (UCD)
_RAJ200005 38 36.13800 "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)
_DEJ2000-69 05 57.8700 "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)
_RAB195005 38 56.73376 "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)
_DEB1950-69 07 30.6503 "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)
_Glon279.46462344 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-31.68130420 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)
499recno 499  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Num 499  (i) [1/9045] Running number ([P93] in Simbad) (meta.id;meta.main)

n_NumS   S indicates that spectroscopic data are available for this star (meta.ref.url)

RAJ200005 38 36.138 "h:m:s" (i) Right ascension J2000 (Note 1)   (pos.eq.ra;meta.main)
DEJ2000-69 05 57.87 "d:m:s" (i) Declination J2000 (Note 1)   (pos.eq.dec;meta.main)
Xpos363.13 pix X position (Note 2)   (pos.cartesian.x;instr.det)
Ypos 172.54 pix Y position (Note 2)   (pos.cartesian.y;instr.det)
Vmag11.870 mag V magnitude, in Johnson system (phot.mag;em.opt.V)
e_Vmag 0.008 mag Vmag accuracy (stat.error;phot.mag;em.opt.V)
B-V 0.340 mag B-V color, in Johnson system (phot.color;em.opt.B;em.opt.V)
e_B-V 0.014 mag B-V accuracy (stat.error;phot.color;em.opt.B)
U-B-0.524 mag U-B color, in Johnson system (Note 3)   (phot.color;em.opt.U;em.opt.B)
e_U-B 0.012 mag U-B accuracy (stat.error;phot.color;em.opt.U)
  
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