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

  
J/A+A/406/535
  Hamburg/RASS Cat. of optical ident. V3.0 (Zickgraf+, 2003)
ReadMe+ftp
2003A&A...406..535Z
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/406/535/x-ray(c)X-ray data (5341 rows)
2.J/A+A/406/535/optical(c)Optical data (13829 rows)
Help Xmatch is

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
ShowSortJoin tables
more join
Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. ((unassigned))
  (1)1RXS (char) Object name, 1RXS JHHMMSS.s+DDMMSS ((unassigned))
  (1)1RXS_data (char) Link to all parameters of ROSAT All-Sky catalogues: bright and faint. ((unassigned))
  (1)RASSCR ct/s RASS count rate ((unassigned);(unassigned))
  (1)e_RASSCR ct/s Error of count rate ((unassigned))
  (1)HR1  Hardness ratio HR1 (Note 1)   ((unassigned);(unassigned))
  (1)e_HR1  Error of HR1 ((unassigned))
  (1)HR2  Hardness ratio HR2 (Note 1)   ((unassigned);(unassigned))
  (1)e_HR2  Error of HR2 ((unassigned))
  (1)Ext arcsec Source extension ((unassigned);(unassigned))
  (1)L_Ext  Source extension likelihood ((unassigned))

ALL cols		    
 (i)indexed column
   (ALL)RX (char) (i) RASS name, RX JHHMM.m+DDMM, as used in the first catalogue version ((unassigned);(unassigned))
   (ALL)RA2000 "h:m:s" Right ascension (2000.0) ((unassigned);(unassigned))
   (ALL)DE2000 "d:m:s" Declination (2000.0) ((unassigned);(unassigned))
  (1)errPos arcsec Error radius derived from the BSC ((unassigned))
  (1)Seq (char) Internal number of the HRC data base ((unassigned))
  (1)Code  Type of source identification code (Note 2)   ((unassigned))
  (1)Flag1  (n) [0/1] 1: identification changed since last catalogue version ((unassigned))
  (1)Flag2  (n) [0/1] 1: entries to this X-ray position have changed since last catalogue version ((unassigned))
  (1)Flag3  (n) [0/1] 1: supplementary X-ray positions ((unassigned))
  (1)Date "Y:M:D" (n) Date of last change (Note 3)   ((unassigned))
  (2)OC (char) [+] + for proposed optical counterpart ((unassigned))
  (2)NOpt  Running number of objects visible in the error circle ([ZEH2003] RX JHHMM.m+DDMM NN>) ((unassigned))
  (2)n_NOpt (char) [P] ((unassigned))

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (2)oRA arcsec X-ray position - optical position in right ascension ((unassigned);(unassigned))
  (2)oDE arcsec X-ray position - optical position in declination ((unassigned);(unassigned))
  (2)rXO arcsec Distance between X-ray and optical position ((unassigned))
  (2)l_Bmag (char) Limit flag on Bmag (Note 1)   ((unassigned))
  (2)Bmag mag (n) Optical magnitude B (no entry means no B magnitude available) ((unassigned);(unassigned))
  (2)n_Bmag (char) [uep:] Note on Bmag (Note 2)   ((unassigned))
  (2)B-R mag (n) B-R colour index from USNA-A 2.0 Catalog (I/252) ((unassigned);(unassigned);(unassigned))
  (2)Class (char) Classification from objective prism spectrum (Note 3)   ((unassigned))
  (2)Note (char) Note when no position ((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 
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**** Report from: stdb_conn_dbms,     Status: STDB_ERR 
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****db1_relink(0): connection was not opened
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****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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If you can't find a solution, report to CDS and insert into your message the following details:

.errorfile=/tmp/VR2948864.err (2026-07-07T19:20:46)
-3
-source=J/A+A/406/535
-ref=VIZ6a4d518e2cff00
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