J/ApJS/276/38
  The Radio Fundamental Catalog - RFC (Petrov+, 2025)
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2025ApJS..276...38P
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1.J/ApJS/276/38/table20List of VLBI absolute astronomy observing campaigns (73 rows) (released 2025-08-27)
[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)
  Survey  Survey (Note 1)   (meta.note)
  Campaign (char) Campaign (Note 2)   (meta.id;obs)
  Network (char) Network (meta.id;instr.obsty)
  ID (char) Observation ID (meta.id;meta.main)
  Ref (char) References (Note 3)   (meta.ref)
  Freq-lo GHz (n) Frequency, low (em.freq)
  Freq-hi GHz (n) Frequency, high (em.freq)
  Dur h Duration, hours (time.duration)
  Num  Number of session (meta.number)
  Start (char) Start Date, YYYY.MM.DD (time.start)
  End (char) End Date, YYYY.MM.DD (time.end)
  Nobs  Number of sources, observed (meta.number)
  Ndet  Number of sources, detected (meta.number)
  Nunq  Number of sources, unique (Note 4)   (meta.number)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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usage  Display UCD1+    UCD1  
-3
-source=J/ApJS/276/38/table20
-ref=VIZ68ef17ce33a06f
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