VizieR

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VizieR

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

  
VII/273
  The Half Million Quasars (HMQ) catalogue (Flesch, 2015)
ReadMe+ftp
2015PASA...32...10F
Similar Catalogs
Post annotation 		img(gal)
1.VII/273/hmqThe Half Million Quasars catalogue (510764 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortColumn  Constraint Explain   (UCD)
  recno  Record number assigned by the VizieR team. Should Not be used for identification. ((unassigned))
  RAJ2000 deg (i) Right ascension (J2000) (Note 1)   ((unassigned);(unassigned))
  DEJ2000 deg (i) Declination (J2000) (Note 1)   ((unassigned);(unassigned))
  Name (char) ID from the literature ((unassigned);(unassigned))
  r_Name  (n) Reference for name, in refs.dat file ((unassigned);(unassigned))
  Cl (char) [ABKQq] Classification of object (Note 2)   ((unassigned))
  A (char) [2RX ] Summary of associations for object (Note 3)   ((unassigned))
  Rmag mag (n) Red optical magnitude (Note 4)   ((unassigned);(unassigned))
  Bmag mag (n) Blue optical magnitude (Note 4)   ((unassigned);(unassigned))
  Com (char) Comment on optical object (Note 5)   ((unassigned);(unassigned);(unassigned))
  R (char) [1nx-] Red optical PSF class (Note 6)   ((unassigned))
  B (char) [1nx-] Blue optical PSF class (Note 6)   ((unassigned))
  z  (n) Redshift from the literature (Note 7)   ((unassigned))
  r_z  (n) Reference for redshift, in refs.dat file ((unassigned);(unassigned))
  XName (char) X-ray ID, if any (Note 9)   ((unassigned))
  RName (char) Radio ID, if any (Note 9)   ((unassigned))
  Lobe1 (char) Radio lobe ID or extra R/X ID, if any (Note 9)   ((unassigned))
  Lobe2 (char) Radio lobe ID or extra X-ray ID, if any (Note 9)   ((unassigned))

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  

The following problems were encountered in this VizieR run:
**** 
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**** Report from: stdb_pg,     Status: STDB_ERR 
****Postgres connect error
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**** Report from: stdb_conn_dbms,     Status: STDB_ERR 
****No server is available for connection
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
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****db1_relink(0): connection was not opened
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****Bad db number: -1
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****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
****db1_relink(0): connection was not opened
****db1_relink(-1): connection was not opened
****Bad db number: -1
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****Bad db number: -1
****Bad db number: -1
****Bad db number: -1
If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR3750517.err (2026-08-11T21:26:34)
-3
-source=VII/273/hmq
-ref=VIZ6a7b938b393a75
elapse time 1
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