VizieR

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VizieR

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J/ApJS/184/138/table3 XID II: RASS/BSC-2MASS/PSC cross-association (Haakonsen+, 2009)
Association catalog (18806 rows)
  recno=15290
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ColumnValue  Explain   (UCD)
_RAJ200018 41 21.800 "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+29 09 32.00 "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)
_RAB195018 39 24.665 "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+29 06 36.30 "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)
_Glon058.432248 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+14.852065 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)
15290recno 15290  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

1RXSJ184121.8+290932  RASS/BSC source name (JHHMMSS.s+DDMMSS) (linked to 1RXS data) (meta.id;meta.main)
objX  SIMBAD object type of RASS/BSC source (src.class)
xrt 0.44 ct/s RASS/BSC source count rate (phot.count;em.X-ray)
e_xrt 0.03 ct/s RASS/BSC source count rate uncertainty (stat.error)
P(noid) 0.335  Probability of no association (Note 1)   (stat.probability)
2MASSJ18412172+2909411   2MASS/PSC source name (JHHMMSSss+DDMMSSs) (linked to 2MASS data) (meta.id.cross)
obj2    SIMBAD object type of 2MASS/PSC source (src.class)
Jmag15.3 mag 2MASS/PSC source J-band magnitude (phot.mag;em.IR.J)
P(id) 0.421   Probability of unique association (Note 1)   (stat.probability)

SimbadSimbad  ask the Simbad data-base about this object
_RA280.3408 deg (i) Positions from 1RXS name (right ascension part) (pos.eq.ra;meta.main)
_DE+29.1589 deg (i) Positions from 1RXS name (declination part) (pos.eq.dec;meta.main)
  
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