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VizieR

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J/ApJS/192/10/table4 Chandra ACIS survey in 383 nearby galaxies. I. (Liu, 2011)
X-ray point sources in nearby galaxies (17559 rows)
  recno=12909
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ColumnValue  Explain   (UCD)
_RAJ200005 08 00.09800 "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)
_DEJ2000-37 29 12.3000 "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)
_RAB195005 06 16.29210 "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)
_DEB1950-37 33 01.4999 "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)
_Glon241.19111136 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-35.83954814 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)
12909recno 12909  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Group125   [1/320] Group number (meta.id)
CXOJ050800.098-372912.30  (i) Source name (JHHMMSS.sss+DDMMSS.ss) (linked to individual observations ) (Note 1)   (meta.id;meta.main)

U   U indicates an ultraluminous X-ray source, S an ultraluminous supersoft X-ray source (meta.ref.url)

ePos 1.03 arcsec Source positional uncertainty (Note 2)   (stat.error;pos)
NameNGC1808-X21  Galatic source name (Note 3)   (meta.id)
alpha 3.805 arcmin Galactic source nuclear separation (pos.angDistance)
r25 1.87   Galactic source nuclear separation (Note 4)   (pos.angDistance)
Dist 10.80 Mpc Distance to source (pos.distance;pos.heliocentric)
V/D1/1  Ratio of time source was observed to detected (meta.number)
LX 1.360e+38 10-7W Maximum computed luminosity; in erg/s (phys.luminosity;em.X-ray)
FX 9.72e-15 mW/m2 Average computed X-ray flux; in erg/s/cm2 (phot.flux;em.X-ray)
F/F 1.0  The Fmax/Fmin flux ratio (Note 5)   (phot.flux;arith.ratio)
E_F/F    Positive error in F/F (stat.error;stat.max)
e_F/F    Negative error in F/F (stat.error;phys.abund)
Sigmax 14.3  Maximum detection significance (stat.likelihood;obs)
Cmax 33.9  Maximum photon counts from detections (phot.count;em.X-ray)
SQHh1  Phase statistics (Note 6)   (src.class)
PKS   K-S criterion variability statistics (Note 7)   (stat.fit.goodness;src.var)
Note   Source identification (Note 8)   (meta.note)

_RA077.000408 deg (i) Positions from CXO names (right ascension part) (pos.eq.ra;meta.main)
_DE-37.486750 deg (i) Positions from CXO names (declination part) (pos.eq.dec;meta.main)
  
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