VizieR

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VizieR

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I/246/act The ACT Reference Catalog (Urban+ 1997)
Full ACT catalog, originally split into 48 files, each 30min wide (988758 rows)
  AC2000=1694295
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Note: Direct links to the Hipparcos and Tycho data (catalog I/239) are provided when relevant

ColumnValue  Explain   (UCD)
_RAJ200000 01 30.256733 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+60 19 21.47800 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195023 58 56.413961 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+60 02 39.51176 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon116.784625252 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat -1.951774016 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
814recno 814  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RA(ICRS)00 01 30.2567 "h:m:s" (i) Right Ascension ICRS, Epoch=J2000.0 (hours) (pos.eq.ra;meta.main)
DE(ICRS)+60 19 21.478 "d:m:s" (i) Declination ICRS, Epoch=J2000.0 (sign) (pos.eq.dec;meta.main)
pmRA-0.00078 s/yr Proper Motion in RA, (sec of time/yr) (pos.pm;pos.eq.ra)
pmDE-0.0002 arcsec/yr Proper Motion in Dec, arcsec/yr) (pos.pm;pos.eq.dec)
e_RAs 32.3 mas Stand. dev. of RA at Epoch 1991.25 from Tycho (T14) (stat.error)
e_DEs 39.4 mas Stand. dev. of Dec at Epoch 1991.25 from Tycho (T15) (stat.error)
e_pmRA 3.22 mas/yr Stand. dev. of Proper motion (RA), (stat.error)
e_pmDE 0.98 mas/yr Stand. dev. of Proper motion (DE), (stat.error)
BTmag11.980 mag Blue magnitude from Tycho (T32) (phot.mag;em.opt.B)
VTmag11.294 mag Visual magnitude from Tycho (T34) (phot.mag;em.opt.V)
B-V 0.618 mag Johnson B-V from Tycho (T37) (phot.color;em.opt.B;em.opt.V)
flag1    [X] Astrometric Quality flag (T10) (Note)   (meta.note)
flag24   [1-8] Quality flag (T40) (Note)   (meta.note)
flag3    [GN] Known variability flag (T47) (Note)   (meta.code;src.var)
flag4    [UVW] Variability from Tycho (T48) (Note)   (meta.code;src.var)
flag5Z   [YZ] Duplicity from Tycho (T49) (Note)   (meta.note)
TYC401400220501  (i) Tycho ID, embedded zeros for blanks (meta.id;meta.main)
AC20001694295  AC 2000 Number (meta.id)
BD   BD identifier (T54) (meta.id)
CD   CD identifier (T55) (meta.id)
CPD   CPD identifier (T56) (meta.id)
HD   Henry Draper Number (T53) (meta.id)
HIP   (i) Hipparcos Number (T31) (meta.id)
  
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