| V/50/catalog | Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991) The main part of the Catalogue (9110 rows) | HR===2491 |
| Column | Value | Explain (UCD) | |
| _RAJ2000 | 06 45 08.9 | "h:m:s" | Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra) |
| _DEJ2000 | -16 42 58 | "d:m:s" | Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec) |
| _RAB1950 | 06 42 56.7 | "h:m:s" | Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra) |
| _DEB1950 | -16 38 46 | "d:m:s" | Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec) |
| _Glon | 227.2302 | deg | Galactic longitude at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.galactic.lon) |
| _Glat | -8.8903 | deg | Galactic latitude at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.galactic.lat) |
| HR | 2491 | [1/9110] Harvard Revised Number = Bright Star Number (meta.id;meta.main) | |
| Name | 9Alp CMa | Name, generally Bayer and/or Flamsteed name (meta.id) | |
| DM | BD-16 1591 | Durchmusterung Identification (zone in bytes 17-19) (meta.id) | |
| HD | 48915 | [1/225300] Henry Draper Catalog Number (meta.id) | |
| SAO | 151881 | [1/258997] SAO Catalog Number (meta.id) | |
| FK5 | 257 | FK5 star Number (meta.id) | |
| IRflag | I | [I] I if infrared source (meta.note) | |
| r_IRflag | [ ':] Coded reference for infrared source (Note) (meta.ref) | ||
| Multiple | [AWDIRS] Double or multiple-star code (Note) (meta.note) | ||
| ADS | 5423 | Aitken's Double Star Catalog (ADS) designation (meta.id) | |
| ADScomp | ADS number components (meta.id) | ||
| VarID | Variable star identification (meta.id) | ||
| RAJ2000 | 06 45 08.9 | "h:m:s" | Hours RA, equinox J2000, epoch 2000.0 (Note 1) (pos.eq.ra;meta.main) |
| DEJ2000 | -16 42 58 | "d:m:s" | Sign Dec, equinox J2000, epoch 2000.0 (Note 1) (pos.eq.dec;meta.main) |
| GLON | 227.22 | deg | Galactic longitude (Note 1) (pos.galactic.lon) |
| GLAT | -8.88 | deg | Galactic latitude (Note 1) (pos.galactic.lat) |
| Vmag | -1.46 | mag | Visual magnitude (Note 1) (phot.mag;em.opt.V) |
| n_Vmag | [ HR] Visual magnitude code (Note) (meta.note) | ||
| u_Vmag | [ :?] Uncertainty flag on V (meta.code.error) | ||
| B-V | 0.00 | mag | B-V color in the UBV system (phot.color;em.opt.B;em.opt.V) |
| u_B-V | [ :?] Uncertainty flag on B-V (meta.code.error) | ||
| U-B | -0.05 | mag | U-B color in the UBV system (phot.color;em.opt.U;em.opt.B) |
| u_U-B | [ :?] Uncertainty flag on U-B (meta.code.error) | ||
| R-I | -0.03 | mag | R-I in system specified by n_R-I (phot.color;em.opt.R;em.opt.I) |
| n_R-I | [CE:?D] Code for R-I system (Cousin, Eggen) (meta.note) | ||
| SpType | A1Vm | Spectral type (src.spType) | |
| n_SpType | [evt] Spectral type code (meta.note) | ||
| pmRA | -0.553 | arcsec/yr | Annual proper motion in RA J2000, FK5 system (pos.pm;pos.eq.ra) |
| pmDE | -1.205 | arcsec/yr | Annual proper motion in Dec J2000, FK5 system (pos.pm;pos.eq.dec) |
| n_Parallax | [D] D indicates a dynamical parallax, otherwise a trigonometric parallax (meta.note) | ||
| Parallax | 0.375 | arcsec | Trigonometric parallax (unless n_Parallax) (pos.parallax.trig) |
| RadVel | -8 | km/s | Heliocentric Radial Velocity (phys.veloc;pos.heliocentric) |
| n_RadVel | SBO | [V?SB123O ] Radial velocity comments (Note) (meta.note) | |
| l_RotVel | [<=> ] Rotational velocity limit characters (meta.code.error) | ||
| RotVel | 13 | km/s | Rotational velocity, v sin i (phys.veloc.rotat) |
| u_RotVel | [ :v] uncertainty and variability flag on RotVel (meta.code.error) | ||
| Dmag | 10.3 | mag | Magnitude difference of double, or brightest multiple (phot.mag;arith.diff) |
| Sep | 11.2 | arcsec | Separation of components in Dmag if occultation binary. (pos.angDistance) |
| MultID | AB | Identifications of components in Dmag (meta.code.multip) | |
| MultCnt | 4 | Number of components assigned to a multiple (meta.number) | |
| NoteFlag | * | [*] a star indicates that there is a note (see file notes) (meta.note) | |
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