VizieR

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VizieR

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I/313/lqrf LQRF: Large Quasar Reference Frame (Andrei+, 2009)
J2000 equatorial coordinates catalog (100165 rows)
  recno=88926
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ColumnValue  Explain   (UCD)
_RAJ200021 07 01.482400 "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+42 14 09.50600 "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)
_RAB195021 05 09.273636 "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+42 02 02.49551 "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)
_Glon084.929384442 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 -3.495991098 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)
88926recno 88926  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RAJ200021 07 01.4824 "h:m:s" (i) Right ascension (J2000.0) (pos.eq.ra;meta.main)
DEJ2000+42 14 09.506 "d:m:s" (i) Declination (J2000.0) (pos.eq.dec;meta.main)
e_RAJ2000 93.8 mas External RA error (RAcosDE) (stat.error;pos.eq.ra)
e_DEJ2000 257.0 mas External DE error (stat.error;pos.eq.dec)
Nr 6  Number of radio interferometry neighbor positions used to evaluate the external errors (meta.number)
Rmag 9.74  Magnitude R (Note 1)   (phot.mag;em.opt.R)
z    Redshift (1) (Note 2)   (src.redshift)

LQACLQAC  Details from LQAC (Souchay et al. 2009, Cat. J/A+A/494/799) (meta.ref.url)

oRA  mas Right ascension offset to the radio position counterpart (RAcosDEC) (Note 2)   (pos.eq.ra;arith.diff)
oDE  mas Declination offset to the radio position counterpart (Note 2)   (pos.eq.dec;arith.diff)
RAr  "h:m:s" Right ascension of the radio position counterpart (J2000.0) (Note 2)   (pos.eq.ra)
DEr  "d:m:s" Declination of the radio position counterpart (J2000.0) (Note 2)   (pos.eq.dec)
  
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