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IX/32/rosat ROSAT Bright Survey (Fischer+, 1998-2000)
The ROSAT Bright Survey (RBS) catalogue (2072 rows)
  recno=809
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ColumnValue  Explain   (UCD)
_RAJ200009 55 52.200 "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+69 40 47.00 "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)
_RAB195009 51 43.482 "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+69 55 00.67 "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)
_Glon141.409695 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+40.566678 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)
809recno 809  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RBS 809  (i) ROSAT Bright Survey number (meta.id)
1RXSJ095550.4+694052  1RXSJ X-ray coordinates (Cat. IX/10) (meta.id)
RAJ200009 55 52.2 "h:m:s" (i) Optical right ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000+69 40 47 "d:m:s" (i) Optical declination (J2000) (pos.eq.dec;meta.main)
Dist 10 arcsec Distance optical minus X positions (pos.angDistance)
e_Pos 13 arcsec X-ray positional uncertainty (1σ) as given in the 1RXS-catalog. The 90% confidence error radius is r90=1.65σ (stat.error)
CR 0.90 ct/s RASS countrate in the total ROSAT window 0.1-2.4keV (phot.count;em.X-ray)
CRH 0.90 ct/s RASS countrate in the hard ROSAT window 0.5-2.0keV (phot.count;em.X-ray)
HR1 1.00  hardness ratio (Note 1)   (phot.flux;arith.ratio)
HR2 0.32  hardness ratio (Note 1)   (phot.flux;arith.ratio)
NH 4.27 10+20cm-2 Galactic hydrogen column density (phys.columnDensity)
NameMESSIER 82  (Truncated) Name in optical catalogues (meta.id.assoc)
XClassGALAX  Class of X-ray source (Note 2)   (src.class)
TypeHII  Type within class (Note 2)   (src.class)
z 0.0007   redshift (src.redshift)
u_z   Uncertainy flag on z (meta.code.error)
l_Mag   Limit flag on Mag (meta.code.error)
Mag 9.3 mag Optical brightness (typically in the V-band, sometimes only through spectrograph slit (phot.mag;em.opt.V)
u_Mag   Uncertainty flag on Mag (meta.code.error)
n_MagN   [CSNBDRE] Band and origin of magnitude (Note 3)   (meta.note)
FX 1197 10-17W/m2 Flux in ROSAT X-ray band (phot.flux;em.X-ray)
logFX/Fo -1.83   log flux ratio X-ray to optical (phot.flux;arith.ratio)
logLX 40.4 10-7W log of X-ray luminosity (phys.luminosity;em.X-ray)
Note    [Y] Y: Note detailed in notes.dat file (meta.note)
  
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