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V/50/catalog Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)
The main part of the Catalogue (9110 rows)
  HR=2421
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ColumnValue  Explain   (UCD)
_RAJ200006 37 42.7 "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 23 57 "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)
_RAB195006 34 49.4 "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 26 37 "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)
_Glon196.7737 deg Galactic longitude at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat +4.4525 deg Galactic latitude at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.galactic.lat)
2421recno 2421  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2421  (i) [1/9110] Harvard Revised Number = Bright Star Number (meta.id;meta.main)
Name 24Gam Gem  Name, generally Bayer and/or Flamsteed name (meta.id)
DMBD+16 1223  Durchmusterung Identification (zone in bytes 17-19) (meta.id)
HD 47105   [1/225300] Henry Draper Catalog Number (meta.id)
SAO 95912   [1/258997] SAO Catalog Number (meta.id)
FK5 251   FK5 star Number (meta.id)
IRflagI   [I] I if infrared source (meta.note)
r_IRflag    [ ':] Coded reference for infrared source (Note)   (meta.ref)
MultipleW   [AWDIRS] Double or multiple-star code (Note)   (meta.note)
ADS   Aitken's Double Star Catalog (ADS) designation (meta.id)
ADScomp   ADS number components (meta.id)
VarID   Variable star identification (meta.id)
RAJ200006 37 42.7 "h:m:s" (i) Hours RA, equinox J2000, epoch 2000.0 (Note 1)   (pos.eq.ra;meta.main)
DEJ2000+16 23 57 "d:m:s" (i) Sign Dec, equinox J2000, epoch 2000.0 (Note 1)   (pos.eq.dec;meta.main)
GLON196.77 deg Galactic longitude (Note 1)   (pos.galactic.lon)
GLAT 4.45 deg Galactic latitude (Note 1)   (pos.galactic.lat)
Vmag 1.93 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 0.04 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-0.01 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 A0IV  Spectral type (src.spType)
n_SpType    [evt] Spectral type code (meta.note)
pmRA 0.042 arcsec/yr Annual proper motion in RA J2000, FK5 system (pos.pm;pos.eq.ra)
pmDE-0.042 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 0.033 arcsec Trigonometric parallax (unless n_Parallax) (pos.parallax.trig)
RadVel -13 km/s Heliocentric Radial Velocity (phys.veloc;pos.heliocentric)
n_RadVelSB   [V?SB123O ] Radial velocity comments (Note)   (meta.note)
l_RotVel    [≤> ] Rotational velocity limit characters (meta.code.error)
RotVel 32 km/s Rotational velocity, v sin i (phys.veloc.rotat)
u_RotVel    [ :v] uncertainty and variability flag on RotVel (meta.code.error)
Dmag 9.0 mag Magnitude difference of double, or brightest multiple (phot.mag;arith.diff)
Sep 143.5 arcsec Separation of components in Dmag if occultation binary. (pos.angDistance)
MultIDAC  Identifications of components in Dmag (meta.code.multip)
MultCnt 3   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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