VizieR

CfA VizieR . ADAC VizieR . CADC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . Beijing (Ch) 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=0947700658
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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)
_RAJ200023 38 23.4144 "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)
_DEJ2000-76 52 11.568 "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)
_RAB195023 35 20.4379 "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)
_DEB1950-77 08 48.826 "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)
_Glon308.2249725 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-39.4981161 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)

GSC0947700658  (i) GSC designation (Note)   (meta.id;meta.main)
RAJ2000354.59756 deg (i) Right ascension in J2000, epoch of plate (pos.eq.ra;meta.main)
DEJ2000-76.86988 deg (i) Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
PosErr 3.6 arcsec Mean error on position (stat.error)
Pmag 6.64 mag (i) photographic magnitude (see n_Pmag) (phot.mag;em.opt)
e_Pmag 0.42 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)
Plate00OO  Plate designation (Note)   (obs.field)
Epoch1977.769 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)
_RAJ200023 38 23.8800 "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)
_DEJ2000-76 52 09.588 "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)
_RAB195023 35 20.9146 "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)
_DEB1950-77 08 46.850 "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)
_Glon308.2246976 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-39.4987882 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)

GSC0947700658  (i) GSC designation (Note)   (meta.id;meta.main)
RAJ2000354.59950 deg (i) Right ascension in J2000, epoch of plate (pos.eq.ra;meta.main)
DEJ2000-76.86933 deg (i) Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
PosErr 0.5 arcsec Mean error on position (stat.error)
Pmag 6.00 mag (i) photographic magnitude (see n_Pmag) (phot.mag;em.opt)
e_Pmag 0.00 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)
Plate+056  Plate designation (Note)   (obs.field)
Epoch1990.000 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)
_RAJ200023 38 23.7360 "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)
_DEJ2000-76 52 07.212 "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)
_RAB195023 35 20.7691 "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)
_DEB1950-77 08 44.473 "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)
_Glon308.2251714 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-39.4993544 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)

GSC0947700658  (i) GSC designation (Note)   (meta.id;meta.main)
RAJ2000354.59890 deg (i) Right ascension in J2000, epoch of plate (pos.eq.ra;meta.main)
DEJ2000-76.86867 deg (i) Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
PosErr10.7 arcsec Mean error on position (stat.error)
Pmag 6.71 mag (i) photographic magnitude (see n_Pmag) (phot.mag;em.opt)
e_Pmag 0.43 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)
Plate0024  Plate designation (Note)   (obs.field)
Epoch1977.782 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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