VizieR

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

VizieR

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I/247/ac2000 The AC2000 Catalogue (Urban+ 1997)
full AC J2000 catalog, split here into 14 files. (4621836 rows)
  recno=613582
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Note: Detailed information can be found in intro.tex (see also http://aries.usno.navy.mil/ad/ac.html) Direct links to Hipparcos and Tycho observations are provided from the relevant columns.

ColumnValue  Explain   (UCD)
_RAJ200017 49 33.49100 "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+48 28 13.2800 "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 48 15.04785 "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+48 29 01.6931 "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)
_Glon075.43649360 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+29.91706556 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)
613582recno 613582  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RA(ICRS)17 49 33.491 "h:m:s" (i) Right Ascension (ICRS) at Epoch (hours) (pos.eq.ra;meta.main)
DE(ICRS)+48 28 13.28 "d:m:s" (i) Declination (ICRS) at Epoch (degrees) (pos.eq.dec;meta.main)
Bmag11.24 mag Magnitude from image diameters (phot.mag;em.opt.B)
Epoch1902.550 yr Mean epoch of position (time.epoch)
Num 2  Number of images used (meta.number)
e_RAs 0.126 arcsec Standard deviation of mean, RA (stat.error)
e_DEs 0.010 arcsec Standard deviation of mean, Dec (stat.error)
AC2000 1625579  (i) AC 2000 Number (meta.id;meta.main)
HIP   (i) Hipparcos Number (Cat. I/239) (meta.id)
TYC351500124801  Tycho ID (Cat. I/239) (Note)   (meta.id)
ACRS2545597  ACRS number (Cat. I/171) (meta.id)
Vflag    [1] Verification Flag (Note)   (meta.note)
  
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