VizieR

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

VizieR

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I/220/out The HST Guide Star Catalog, Version 1.1 (Lasker+ 1992)
The Full Catalogue (25258765 positions) (25258765 rows)
  GSC=0042900636
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Note: The Guide Star Catalog has been constructed to support the operational need of the Hubble Space Telescope; it is primarily based on an all-sky, single epoch, single passband collection of Schmidt plates. It contains over 25 million positions for about 19 million objects, of which more than 15 million are classified as stars.

ColumnValue  Explain   (UCD)
_RAJ200017 59 25.2288 "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+06 17 12.732 "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)
_RAB195017 56 58.7998 "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+06 17 20.567 "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)
_Glon 32.6638515 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 14.4182598 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)

GSC0042900636  (i) GSC designation (Note)   (meta.id;meta.main)
RAJ2000269.85512 deg (i) Right ascention in J2000, epoch of plate (pos.eq.ra;meta.main)
DEJ2000 6.28687 deg (i) Declination in J2000, epoch of plate (pos.eq.dec;meta.main)
PosErr 0.4 arcsec Mean error on position (stat.error)
Pmag12.49 mag (i) photographic magnitude (see n_Pmag) (phot.mag;em.opt)
e_Pmag 0.41 mag Mean error on photographic magnitude (stat.error)
n_Pmag 1   [0,18] Coded passband for magnitude (Note)   (meta.note)
Class3   [0,3] Class of object (0=star; 3=non-stellar) (src.class)
Plate02V7  Plate designation (obs.field)
Epoch1982.478 yr Epoch of plate (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)
  
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Rules of usage of VizieR data

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