VizieR

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VizieR

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J/AJ/105/499/table1 OB Associations and Spiral Structure in M33 (Regan+ 1993)
The observations (2018 rows)
  recno=1394
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200001 33 39.118 "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+30 32 25.02 "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)
_RAB195001 30 50.001 "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+30 17 03.00 "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)
_Glon133.588493 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-31.456441 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)
1394recno 1394  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

ID1394  (i) [1/2018] Star ID (meta.id;meta.main)
X1887 pix X Coordinate (pos.cartesian.x;instr.det)
V20.66 mag V band Magnitude (phot.mag;em.opt.V)
e_V 0.02 mag V uncertainty (stat.error;pos.cartesian.y)
B21.15 mag B band Magnitude (phot.mag;em.opt.B)
e_B 0.04 mag B uncertainty (stat.error)
U  mag U band Magnitude (blank if undetermined) (phot.mag;em.opt.U)
e_U  mag U uncertainty (blank if undetermined) (stat.error;pos.cartesian.x)
B-V 0.48 mag B-V Magnitude (phot.color;em.opt.B;em.opt.V)
U-B  mag U-B Magnitude (blank if undetermined) (phot.color;em.opt.U;em.opt.B)
ass44   [22/58] Association number containing star (meta.id.parent)
Y-248 pix Y Coordinate (pos.cartesian.y;instr.det)

_RA.icrs01 33 39.1 "h:m:s" (i) Right ascension (ICRS) (computed by VizieR, not part of the original data) (pos.eq.ra;meta.main)
_DE.icrs+30 32 25 "d:m:s" (i) Declination (ICRS) (computed by VizieR, not part of the original data) (pos.eq.dec;meta.main)

RA195001 30 50.0 "h:m:s" (i) Right Ascension (1950) (pos.eq.ra;meta.main)
DE1950+30 17 03 "d:m:s" (i) [30] Declination (1950) (pos.eq.dec;meta.main)
  
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