VizieR

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VizieR

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IX/43/xcor 1SXPS Swift X-ray telescope point source catalogue (Evans+ 2014)
Cross-correlation of the 1SXPS sources (502530 rows)
  recno=12125
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ColumnValue  Explain   (UCD)
_RAJ200000 42 42.3000 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000+40 51 50.004 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195000 39 58.2147 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950+40 35 24.424 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon121.1515705 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-21.9776686 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
12125recno 12125  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

1SXPSJ004242.4+405150  Unique 1SXPS ID (JHHMMSS.S+DDMMSS) (meta.id;meta.main)
NameMESSIER 031:[SBK2009] 116  Designation of the source in the external catalog (ExtCat_ID) (meta.id.cross)
CatNED  Catalog containing the matched source (Catalog) (meta.note)
r 1.5 arcsec [0/1081] distance between the 1SXPS source and external catalog source (Distance) (pos.angDistance;meta.table)
RAJ2000010.67625 deg (i) J2000 right ascension of the source in the external catalog (RA) (pos.eq.ra;meta.main)
DEJ2000+40.86389 deg (i) J2000 declination of the source in the external catalog (Decl) (pos.eq.dec;meta.main)
Err90  arcsec [0/680] 90% confidence radial uncertainty in the external catalog position, including any systematic error. (stat.error)
  
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