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V/50/catalog Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)
The main part of the Catalogue (9110 rows)
  recno=3748
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ColumnValue  Explain   (UCD)
_RAJ200009 27 35.2 "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)
_DEJ2000-08 39 31 "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)
_RAB195009 25 07.7 "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)
_DEB1950-08 26 27 "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)
_Glon241.4880 deg Galactic longitude at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat+29.0453 deg Galactic latitude at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.galactic.lat)
3748recno 3748  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR3748   [1/9110] Harvard Revised Number = Bright Star Number (meta.id;meta.main)
Name 30Alp Hya  Name, generally Bayer and/or Flamsteed name (meta.id)
DMBD-08 2680  Durchmusterung Identification (zone in bytes 17-19) (meta.id)
HD 81797   [1/225300] Henry Draper Catalog Number (meta.id)
SAO136871   [1/258997] SAO Catalog Number (meta.id)
FK5 354   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 4496  Variable star identification (meta.id)
RAJ200009 27 35.2 "h:m:s" Hours RA, equinox J2000, epoch 2000.0 (Note 1)   (pos.eq.ra;meta.main)
DEJ2000-08 39 31 "d:m:s" Sign Dec, equinox J2000, epoch 2000.0 (Note 1)   (pos.eq.dec;meta.main)
GLON241.49 deg Galactic longitude (Note 1)   (pos.galactic.lon)
GLAT 29.05 deg Galactic latitude (Note 1)   (pos.galactic.lat)
Vmag 1.98 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 1.44 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 1.72 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 0.77 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 K3II-III  Spectral type (src.spType)
n_SpType    [evt] Spectral type code (meta.note)
pmRA-0.014 arcsec/yr Annual proper motion in RA J2000, FK5 system (pos.pm;pos.eq.ra)
pmDE 0.033 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 0.022 arcsec Trigonometric parallax (unless n_Parallax) (pos.parallax.trig)
RadVel -4 km/s Heliocentric Radial Velocity (phys.veloc;pos.heliocentric)
n_RadVelV?   [V?SB123O ] Radial velocity comments (Note)   (meta.note)
l_RotVel <   [≤> ] Rotational velocity limit characters (meta.code.error)
RotVel 17 km/s Rotational velocity, v sin i (phys.veloc.rotat)
u_RotVel    [ :v] uncertainty and variability flag on RotVel (meta.code.error)
Dmag 7.5 mag Magnitude difference of double, or brightest multiple (phot.mag;arith.diff)
Sep 283.1 arcsec Separation of components in Dmag if occultation binary. (pos.angDistance)
MultIDAB  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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