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V/50/catalog Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)
The main part of the Catalogue (9110 rows)
  HR==2491
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ColumnValue  Explain   (UCD)
_RAJ200006 45 08.900 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.ra)
_DEJ2000-16 42 58.00 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (pos.eq.dec)
2491recno 2491  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491  (i) [1/9110] Harvard Revised Number = Bright Star Number (meta.id;meta.main)
Name 9Alp CMa  Name, generally Bayer and/or Flamsteed name (meta.id)
DMBD-16 1591  Durchmusterung Identification (zone in bytes 17-19) (meta.id)
HD 48915   [1/225300] Henry Draper Catalog Number (meta.id)
SAO151881   [1/258997] SAO Catalog Number (meta.id)
FK5 257   FK5 star Number (meta.id)
IRflagI   [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)
RAJ200006 45 08.9 "h:m:s" (i) Hours RA, equinox J2000, epoch 2000.0 (Note 1)   (pos.eq.ra;meta.main)
DEJ2000-16 42 58 "d:m:s" (i) Sign Dec, equinox J2000, epoch 2000.0 (Note 1)   (pos.eq.dec;meta.main)
GLON227.22 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_RadVelSBO   [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)
Dmag10.3 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)
MultIDAB  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)
V/50/notes Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)
Remarks (9190 rows)
  HR==2491
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ColumnValue  Explain   (UCD)
2767recno 2767  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 1  Note counter (sequential for a star) (meta.note)
CategoryC:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
RemarkColor excess E(B-V) = -0.03.  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2768recno 2768  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 1  Note counter (sequential for a star) (meta.note)
CategoryD:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
RemarkAB -1.46 A1V, 8.49 A1V, 50.090y, a = 7.500" or 49.94y, a = 7.62". D, 14.0v at 32" from A. C, companion to B at 1.4"  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2769recno 2769  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 2  Note counter (sequential for a star) (meta.note)
CategoryD:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
Remarksuspected but not confirmed. B is first white dwarf ever discovered; predicted by Bessel (1844) on basis of orbital  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2770recno 2770  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 3  Note counter (sequential for a star) (meta.note)
CategoryD:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
Remarkmotion of Sirius, it was first seen by Alvan Clark in 1862, and its peculiar high temperature, small size and great  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2771recno 2771  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 4  Note counter (sequential for a star) (meta.note)
CategoryD:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
Remarkdensity established by W. Adams in 1925.  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2772recno 2772  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 1  Note counter (sequential for a star) (meta.note)
CategoryDYN:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
Remark0.376".  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2773recno 2773  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 1  Note counter (sequential for a star) (meta.note)
CategoryG:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
RemarkSirius group; UMa stream.  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2774recno 2774  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 1  Note counter (sequential for a star) (meta.note)
CategoryM:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
RemarkSoft X-rays observed from Astronomical Netherlands Satellite (ANS). Sirius B not unusual compared with other dA white  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2775recno 2775  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 2  Note counter (sequential for a star) (meta.note)
CategoryM:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
Remarkdwarfs. Effective temperature about 32000K.  Remarks in free form text (meta.note)
ColumnValue  Explain   (UCD)
2776recno 2776  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HR2491   [1/9110] Harvard Revised (HR) (meta.id;meta.main)
Count 1  Note counter (sequential for a star) (meta.note)
CategoryN:   [A-Z: ] Remark category abbreviation: (Note)   (meta.note)
RemarkSIRIUS; Canicula; Dog Star; Aschere.  Remarks in free form text (meta.note)
  
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