| I/246/act | The ACT Reference Catalog (Urban+ 1997) Full ACT catalog, originally split into 48 files, each 30min wide (988758 rows) | AC2000=1943568 |
Note: Direct links to the Hipparcos and Tycho data (catalog I/239) are provided when relevant
| Column | Value | Explain (UCD) | |
| _RAJ2000 | 01 08 44.896600 | "h:m:s" | Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra) |
| _DEJ2000 | +86 15 25.52900 | "d:m:s" | Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec) |
| _RAB1950 | 01 01 30.621678 | "h:m:s" | Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.ra) |
| _DEB1950 | +85 59 24.26582 | "d:m:s" | Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (pos.eq.dec) |
| _Glon | 123.239437109 | deg | Galactic longitude at Epoch=J2000, proper motions taken into account (pos.galactic.lon) |
| _Glat | +23.395683036 | deg | Galactic latitude at Epoch=J2000, proper motions taken into account (pos.galactic.lat) |
| 35522recno | 35522 | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) | |
| RA(ICRS) | 01 08 44.8966 | "h:m:s" | (i) Right Ascension ICRS, Epoch=J2000.0 (hours) (pos.eq.ra;meta.main) |
| DE(ICRS) | +86 15 25.529 | "d:m:s" | (i) Declination ICRS, Epoch=J2000.0 (sign) (pos.eq.dec;meta.main) |
| pmRA | 0.08413 | s/yr | Proper Motion in RA, (sec of time/yr) (pos.pm;pos.eq.ra) |
| pmDE | -0.0109 | arcsec/yr | Proper Motion in Dec, arcsec/yr) (pos.pm;pos.eq.dec) |
| e_RAs | 1.4 | mas | Stand. dev. of RA at Epoch 1991.25 from Tycho (T14) (stat.error) |
| e_DEs | 1.3 | mas | Stand. dev. of Dec at Epoch 1991.25 from Tycho (T15) (stat.error) |
| e_pmRA | 1.77 | mas/yr | Stand. dev. of Proper motion (RA), (stat.error) |
| e_pmDE | 1.54 | mas/yr | Stand. dev. of Proper motion (DE), (stat.error) |
| BTmag | 5.838 | mag | Blue magnitude from Tycho (T32) (phot.mag;em.opt.B) |
| VTmag | 4.376 | mag | Visual magnitude from Tycho (T34) (phot.mag;em.opt.V) |
| B-V | 1.231 | mag | Johnson B-V from Tycho (T37) (phot.color;em.opt.B;em.opt.V) |
| flag1 | [X] Astrometric Quality flag (T10) (Note) (meta.note) | ||
| flag2 | 1 | [1-8] Quality flag (T40) (Note) (meta.note) | |
| flag3 | [GN] Known variability flag (T47) (Note) (meta.code;src.var) | ||
| flag4 | W | [UVW] Variability from Tycho (T48) (Note) (meta.code;src.var) | |
| flag5 | Y | [YZ] Duplicity from Tycho (T49) (Note) (meta.note) | |
| TYC | 462300123601 | (i) Tycho ID, embedded zeros for blanks (meta.id;meta.main) | |
| AC2000 | 1943568 | AC 2000 Number (meta.id) | |
| BD | +85 19 | BD identifier (T54) (meta.id) | |
| CD | CD identifier (T55) (meta.id) | ||
| CPD | CPD identifier (T56) (meta.id) | ||
| HD | 5848 | Henry Draper Number (T53) (meta.id) | |
| HIP | 5372 | (i) Hipparcos Number (T31) (meta.id) | |
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