VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

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I/254/out The HST Guide Star Catalog, Version 1.2 (Lasker+ 1996)
The Full Catalogue (25241730 positions) (25241730 rows)
  GSC=0673000941
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Note: The Guide Star Catalog has been constructed to support the operational need of the Hubble Space Telescope. It contains over 25 million positions for about 19 million objects, of which more than 15 million are classified as stars. The version 1.2 is a new astrometric reduction which results in absolute position errors about 0.3-0.4 arcsec. (see GSC pages at URL http://www-gsss.stsci.edu/gsc/gsc.html)

ColumnValue  Explain   (UCD)
_RAJ200014 07 42.0576 "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)
_DEJ2000-23 41 01.680 "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)
_RAB195014 04 53.0263 "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)
_DEB1950-23 26 47.870 "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)
_Glon324.6198197 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+35.9555366 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)

GSC0673000941  (i) GSC designation (Note)   (meta.id;meta.main)
RAJ2000211.92524 deg (i) Right ascension in J2000, epoch of plate (pos.eq.ra;meta.main)
DEJ2000-23.68380 deg (i) Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
PosErr 0.5 arcsec Mean error on position (stat.error)
Pmag11.25 mag (i) photographic magnitude (see n_Pmag) (phot.mag;em.opt)
e_Pmag 0.40 mag Mean error on photographic magnitude (stat.error;phot.mag;em.opt.U)
n_Pmag 0   [0,18] Coded passband for magnitude (Note)   (meta.note)
Class0   [0,3] Class of object (0=star; 3=non-stellar) (src.class)
Plate04NT  Plate designation (Note)   (obs.field)
Epoch1976.479 yr Epoch of plate (Note)   (time.epoch)
MultT   [TF] True if multiple object / False otherwise (meta.code.multip)

VersionsGSC-all  Get parameters of that star from all GSC versions (meta.ref.url)
ColumnValue  Explain   (UCD)
_RAJ200014 07 42.0504 "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)
_DEJ2000-23 41 01.392 "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)
_RAB195014 04 53.0191 "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)
_DEB1950-23 26 47.582 "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)
_Glon324.6198235 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+35.9556211 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)

GSC0673000941  (i) GSC designation (Note)   (meta.id;meta.main)
RAJ2000211.92521 deg (i) Right ascension in J2000, epoch of plate (pos.eq.ra;meta.main)
DEJ2000-23.68372 deg (i) Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
PosErr 0.6 arcsec Mean error on position (stat.error)
Pmag11.34 mag (i) photographic magnitude (see n_Pmag) (phot.mag;em.opt)
e_Pmag 0.40 mag Mean error on photographic magnitude (stat.error;phot.mag;em.opt.U)
n_Pmag 0   [0,18] Coded passband for magnitude (Note)   (meta.note)
Class0   [0,3] Class of object (0=star; 3=non-stellar) (src.class)
Plate05XY  Plate designation (Note)   (obs.field)
Epoch1976.403 yr Epoch of plate (Note)   (time.epoch)
MultT   [TF] True if multiple object / False otherwise (meta.code.multip)

VersionsGSC-all  Get parameters of that star from all GSC versions (meta.ref.url)
  
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Rules of usage of VizieR data

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