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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/644/A159
  The third realization of the ICRF, ICRF3 (Charlot+, 2020)
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2020A&A...644A.159C
Similar Catalogs
Post annotation 		img(gal)
1.J/A+A/644/A159/table10(c)Coordinates at S/X band for 4536 sources (4536 rows)
2.J/A+A/644/A159/table11(c)Coordinates at K band for 824 sources (824 rows)
3.J/A+A/644/A159/table12(c)Coordinates at X/Ka band for 678 sources (678 rows)
4.J/A+A/644/A159/table14List of sources with normalized separation between the S/X and K band positions > 3 (46 rows)
5.J/A+A/644/A159/table15List of sources with normalized separation between the S/X and X/Ka band positions > 3 (70 rows)
6.J/A+A/644/A159/table16List of sources with normalized separation between the S/X and Gaia-CRF2 positions > 3 (653 rows)

Simple ConstraintList Of Constraints
 
Query by Constraints constraints help applied on Columns (Output Order: + - )
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Column  Constraint Explain   (UCD)
  (ALL)recno  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)
  (1)NSepup3 (char) indicates sources with normalized separation between the S/X and K band, X/Ka band or Gaia-CRF2 positions > 3 (meta.ref.url)
  (1+2+3)ICRF (char) International Celestial Reference Frame name, (JHHMMSS.s+DDMMSS) (Note 1)   (meta.id;meta.main)
   (ALL)IERS (char) (i) International Earth Rotation and Reference Systems Service name (HHMM+DDd, B1950 equinox) (Note 2)   (meta.id)
  (1+2+3)Cat (char) [D] ICRF3 source category (Note 3)   (meta.note)
  (1+2+3)fVLBA (char) [V] Flag signaling that the observations are solely from the VLBA (Note 4)   (meta.note)
  (1+2+3)RAICRS "h:m:s" (i) Right ascension (ICRF) at Ep=2015.0 (pos.eq.ra;meta.main)
  (1+2+3)DEICRS "d:m:s" (i) Declination (ICRF) at Ep=2015.0 (pos.eq.dec;meta.main)
  (1+2+3)e_RAICRS s Right ascension uncertainty (stat.error;pos.eq.ra)
  (1+2+3)e_DEICRS arcsec Declination uncertainty (stat.error;pos.eq.dec)
  (1+2+3)Corr  Correlation coefficient between right ascension and declination (stat.correlation)

ALL cols		    
 (i)indexed column
  (1+2+3)Ep d Mean epoch of the sessions in which the source was observed (Note 5)   (time.epoch)
  (1+2+3)Of d Epoch of first session in which the source was observed (Note 5)   (time.epoch)
  (1+2+3)Ol d Epoch of last session in which the source was observed (Note 5)   (time.epoch)
  (1+2+3)Nses  Number of sessions in which the source was observed (meta.number)
  (1+2+3)Ndel  Number of delay observations used to estimate the source position (meta.number)
  (1+2+3)Nrat  Number of delay rate observations used to estimate the source position (meta.number)
  (1+2+3)_RA.icrs "h:m:s" (n)(i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
  (1+2+3)_DE.icrs "d:m:s" (n)(i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  (4+5+6)oRAcosDE uas Offset in RAcosDE (right ascension scaled by the cosine of the declination) (pos.eq.ra;arith.diff)
  (4+5+6)e_oRAcosDE uas Uncertainty for the RAcosDE offset (stat.error)
  (4+5+6)oDE uas Offset in declination (pos.eq.dec;arith.diff)
  (4+5+6)e_oDE uas Uncertainty for the declination offset (stat.error)
  (4+5+6)Sep uas Length of the offset vector (Note 1)   (pos.angDistance)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
  (4+5+6)e_Sep uas Uncertainty for the offset vector length (stat.error)
  (4+5+6)PA deg Direction of the offset vector (Note 2)   (pos.posAng)
  (4+5+6)e_PA deg Uncertainty for the offset vector direction (stat.error)
  (4+5+6)Sep/e_Sep  Normalized separation (stat.error)

ALL cols		    
(n) indicates a possible blank or NULL column(i)indexed column
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