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=1958644
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Note: Direct links to the Hipparcos and Tycho data (catalog I/239) are provided when relevant

ColumnValue  Explain   (UCD)
_RAJ200003 12 47.067400 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000+67 24 01.62700 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
_RAB195003 08 14.380744 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra)
_DEB1950+67 12 51.14058 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec)
_Glon135.907662987 deg Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon)
_Glat +8.161743949 deg Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat)
98952recno 98952  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

RA(ICRS)03 12 47.0674 "h:m:s" (i) Right Ascension ICRS, Epoch=J2000.0 (hours) (pos.eq.ra;meta.main)
DE(ICRS)+67 24 01.627 "d:m:s" (i) Declination ICRS, Epoch=J2000.0 (sign) (pos.eq.dec;meta.main)
pmRA 0.01824 s/yr Proper Motion in RA, (sec of time/yr) (pos.pm;pos.eq.ra)
pmDE-0.0952 arcsec/yr Proper Motion in Dec, arcsec/yr) (pos.pm;pos.eq.dec)
e_RAs 3.5 mas Stand. dev. of RA at Epoch 1991.25 from Tycho (T14) (stat.error)
e_DEs 4.2 mas Stand. dev. of Dec at Epoch 1991.25 from Tycho (T15) (stat.error)
e_pmRA 1.18 mas/yr Stand. dev. of Proper motion (RA), (stat.error)
e_pmDE 0.82 mas/yr Stand. dev. of Proper motion (DE), (stat.error)
BTmag 9.217 mag Blue magnitude from Tycho (T32) (phot.mag;em.opt.B)
VTmag 8.504 mag Visual magnitude from Tycho (T34) (phot.mag;em.opt.V)
B-V 0.640 mag Johnson B-V from Tycho (T37) (phot.color;em.opt.B;em.opt.V)
flag1    [X] Astrometric Quality flag (T10) (Note)   (meta.note)
flag22   [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)
flag5Y   [YZ] Duplicity from Tycho (T49) (Note)   (meta.note)
TYC406100006601  (i) Tycho ID, embedded zeros for blanks (meta.id;meta.main)
AC20001958644  AC 2000 Number (meta.id)
BD+66 247  BD identifier (T54) (meta.id)
CD   CD identifier (T55) (meta.id)
CPD   CPD identifier (T56) (meta.id)
HD 19556  Henry Draper Number (T53) (meta.id)
HIP   (i) Hipparcos Number (T31) (meta.id)
  
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