Simple TargetList Of TargetsFast Xmatch with large catalogs or Simbad
Target Name (resolved by Sesame) or Position:
 Target dimension:
NB: The epoch used for the query is the original epoch of the table(s)Radius Box size

  
I/325
  Radio-optical reference frame link (Zacharias+ 2013)
ReadMe+ftp
2013yCat.1325....0Z
Similar Catalogs
[METAcat] [METAcells] [stats]
Post annotation 		img(gal)
1.I/325/icrf-u2Results from UCAC2-type reductions of ICRF optical counterparts (sample in table 4 of paper) (666 rows) (released 2017-09-29)
[METAtab] [METAcola]

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - ) [METAcola]
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  RAJ2000 "h:m:s" (i) Right Ascension ICRS (pos.eq.ra;meta.main)
  DEJ2000 "d:m:s" (i) Declination ICRS (pos.eq.dec;meta.main)
  Dist mas [0/1821] Distance between the optical and radio positions (pos.angDistance)
  dRA* mas Distance(optical-radio) in RA*cos(Dec) (pos.eq.ra;arith.diff)
  dDec mas Distance(optical-radio) in Dec (pos.eq.dec)
  eRA mas [4/250] total, formal error of optical position (RA*cos(Dec)) (stat.error;spect.dopplerVeloc.opt;em.opt)
  eDE mas [4/250] total, formal error of optical position (Dec) (stat.error;spect.dopplerVeloc.opt;em.opt)
  sRA  ratio dRA*/eRA (position difference in RA in σs) (stat.fit.goodness)
  sDE  ratio dDE/eDE (position difference in Dec in σs) (stat.fit.goodness)
  eRad mas (n) error of radio position (per coordinate) (stat.error;spect.dopplerVeloc.radio;em.radio)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  Nccd  number of deep CCD exposures used (meta.number)
  Nr*  average number of reference stars per deep exposure used (meta.number)
  Nrx  average number of reference stars excluded (meta.number)
  err  mean "plate" solution error of individual deep CCD exposures (stat.error)
  S/N   [1/1639] Approximate signal/noise ratio of target on individual deep CCD (stat.snr;instr.det)
  mag mag (n) Optical brightness from LQAC-2 (J/A+A/537/A99) (phot.mag;em.opt)
  z  (n) [0/5] Redshift from LQAC-2 (J/A+A/537/A99) (src.redshift)
  T   [0/3] Object type: 0=unknown, 1=AGN, 2=BL-Lac, 3=QSO (from Veron's 13th ed. (VII/258) (src.class)
  S  (n) [0.8/7.2] Radio X-band (8-12GHz) structure index from Bordeaux database: 1=very good, 2=good, 3=use with caution, 4=unacceptable (meta.code.qual)
  U   [2/4] UCAC-type reductions (2 or 4) (meta.id;meta.dataset)
  Rname (char) B1950 coordinate based name of target (meta.id;meta.main)
  R  (n)Number of results for this source with UCAC2- and UCAC4-type reductions (meta.number)
  Run (char) [abo-zJ] Code of deep CCD observing run (Note 1)   (meta.code;instr.det)
  n_Run (char) [rc] Type of target: r=regular target, c=also used as calibration field (meta.note)
  Q (char) [ufplgn] Quality letter of optical image (Note 2)   (meta.code.qual;spect.dopplerVeloc.opt;em.opt)
  M  (n)Existence in Vérons' catalogue (VII/258) and/or LQAC-2 (J/A+A/537/A99) within 3arcsec (meta.ref.url)
  Notes (char) Remarks; if a double the separation (pixel) and flux ratio (source/companion) is given (meta.number)
  SimbadName (char) Designation understandable by the Simbad data-base (meta.id)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
Adapt form
 Display your selection only Reset to default columns
usage  Display UCD1+    UCD1  
.errorfile=/tmp/V-3.err (2025-04-19T08:04:24)
-3
-source=I/325/icrf-u2
-ref=VIZ68035908d2076
elapse time 0

Options: wopt=0, optS=0, onote=0, opt1=8, opos=0

Contents of error file (/tmp/V-3.err):
-rwxr-xr-x 1 root root 963736 Apr 10 15:32 /srv/httpd/bin/vizier
====Contents of more_defs:
(nil)
====argColors='(nil)'

....DisplayFile(/srv/httpd/VizieR/+menu.htx) ****Non-existant file****
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select name, dbname, catid, tabid, flags, equinox, epoch, explain, dbaid, cooframe, release, records, notid, comment, status, cooprec, morexplain From METAtab where name = 'METAtime' and catid in (select catid from METAcat where catid=METAtab.catid and (authid=0))
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select catid, morid, text From METAmor where catid=0 order by morid
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select name, dbname, catid, tabid, famid, type, dbtype, length, flags, fmt, unit, dbunit, explain, colid, notid, morid, ucdid, vounit, morexplain From METAcol where catid=0 and  tabid=52 order by colid
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select colid, photid, fltrid, photid1, fltrid1 From METAsed where catid=0 and tabid=52
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   select login from METAdba where login like 'large_tables%'
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select catid, tabid, colid, time_syst_id, scale_name, frame_name, time_systematic_err, name, description, time_offset, time_uncertainty, time_representation, id, id From METAtime where catid=51590043 and tabid=1
#...meta_close(1): retrieved 1/1000 tuples [tested=1]
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select name, dbname, catid, tabid, flags, equinox, epoch, explain, dbaid, cooframe, release, records, notid, comment, status, cooprec, morexplain From METAtab where name = 'METAtimeRel' and catid in (select catid from METAcat where catid=METAtab.catid and (authid=0))
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select ucdid, name, class, explain From METAucd where ucdid=70
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select famid, name, explain From METAfam where famid=162
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select famid, name, explain From METAfam where famid=179
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select ucdid, name, class, explain From METAucd where ucdid=62
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select famid, name, explain From METAfam where famid=339
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select ucdid, name, class, explain From METAucd where ucdid=80
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select famid, name, explain From METAfam where famid=313
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select ucdid, name, class, explain From METAucd where ucdid=84
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select famid, name, explain From METAfam where famid=530
----db1_reset(0 'metaviz@VIZIR')
----db1_query(0 'metaviz@VIZIR'):
[1745049864]   Select famid, name, explain From METAfam where famid=156
----db1_reset(0 'metaviz@VIZIR')
----inherit(u=used, h=hidden):
     [u] +source=I/325/icrf-u2
     [u] -ref=VIZ68035908d2076
====inherit(): added 0 hidden fields
----free temporary files
----db1_close(0 'metaviz@VIZIR')
----db1_close(1 'metaviz@VIZIR')
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