VizieR

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

VizieR

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I/255/out The HST Guide Star Catalog, Version GSC-ACT (Lasker+ 1996-99)
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The GSC-ACT Full Catalogue (25241730 positions) (25241730 rows) 		  GSC=0162201261
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Note: The GSC-ACT (or GSC1.3) is a recalibration of the GSC1.1, the catalogue constructed to support the operational need of the Hubble Space Telescope, with the ACT, the combination of the Astrographic Catalogue and the Tycho catalogue derived from the Hipparcos mission; see http://www.projectpluto.com/gsc_act.htm for more details about this recalibration.

ColumnValue  Explain   (UCD)
_RAJ200020 12 46.8696 "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+18 06 17.784 "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)
_RAB195020 10 31.3335 "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+17 57 13.326 "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)
_Glon058.5411139 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-08.7588555 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)
GSC0162201261  (i) GSC designation (Note)   (meta.id;meta.main)
RAJ2000303.19529 deg (i) Right ascension in J2000, epoch of plate (pos.eq.ra;meta.main)
DEJ2000+18.10494 deg (i) Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
PosErr 0.2 arcsec Mean error on position (stat.error)
Pmag10.30 mag (i) photographic magnitude (see n_Pmag) (phot.mag;em.opt)
e_Pmag 0.35 mag Mean error on photographic magnitude (stat.error;phot.mag;em.opt.U)
n_Pmag 1   [0,18] Coded passband for magnitude (Note)   (meta.note)
Class0   [0,3] Class of object (0=star; 3=non-stellar) (src.class)
Plate02UQ  Plate designation (Note)   (obs.field)
Epoch1982.475 yr Epoch of plate (Note)   (time.epoch)
MultF   [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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