| I/275/ac2002 | The AC 2000.2 Catalogue (Urban+ 2001) All 4,621,751 stars from the AC2000.2 Catalogue (Detailed introduction) (4621751 rows) | recno=3987385 |
Note: Detailed introduction 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.
| Column | Value | Explain (UCD) | |
| _RAJ2000 | 09 04 50.17900 | "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 | -53 07 49.3800 | "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) |
| _RAB1950 | 09 03 18.07307 | "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 | -52 55 48.2309 | "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 | 272.76822960 | 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 | -4.08462573 | 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) |
| 3987385recno | 3987385 | Record number assigned by the VizieR team. Should Not be used for identification. (meta.record) | |
| RAJ2000 | 09 04 50.179 | "h:m:s" | (i) R.A. , at epoch mEp (J2000) (Note 1) (pos.eq.ra;meta.main) |
| DEJ2000 | -53 07 49.38 | "d:m:s" | (i) Decl. , at epoch mEp (Note) (pos.eq.dec;meta.main) |
| Bmag | 12.03 | mag | Observed B magnitude (Note 2) (phot.mag;em.opt.B) |
| mEp | 1900.102 | yr | Mean epoch of position (time.epoch) |
| Num | 1 | Number of images used for astrometry (meta.number) | |
| e_RAJ2000 | arcsec | Standard deviation of Right Ascension (Note 3) (stat.error;pos.eq.ra) | |
| e_DEJ2000 | arcsec | Standard deviation of Declination (Note 3) (stat.error;pos.eq.dec) | |
| ACnum | 4069656 | (i) USNO generated identifier (meta.id;meta.main) | |
| HIP | Hipparcos number (Note 4) (meta.id) | ||
| m_HIP | Hipparcos component identifier (Note 4) (meta.code.multip) | ||
| TYC2 | 858200075301 | Tycho-2 identifier (Note 5) (meta.id) | |
| Vmag | 11.177 | mag | V magnitude (Note 2) (phot.mag;em.opt.V) |
| magflg | [1,3] Magnitude warning flag (Note 6) (meta.code) | ||
| verflg | [1] Verification flag (Note 7) (meta.code) | ||
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