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VizieR

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III/231/catalog The Tycho-2 Spectral Type Catalog (Wright+, 2003)
Main Catalog (351863 rows)
  recno=292736
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ColumnValue  Explain   (UCD)
_RAJ200008 46 30.5455440 "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)
_DEJ2000-45 54 45.023040 "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)
_RAB195008 44 48.3606628 "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)
_DEB1950-45 43 42.076101 "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)
_Glon265.3315773948 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-01.6915822478 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)
292736recno 292736  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC18151  First part of Tycho-2 identifier (meta.id.part;meta.main)
TYC2 3667  Second part of Tycho-2 identifier (meta.id.part;meta.main)
TYC31  Third part of Tycho-2 identifier (meta.id.part;meta.main)
RAJ2000131.62727310 deg (i) Right Ascension, J2000, decimal deg. (pos.eq.ra;meta.main)
DEJ2000-45.91250640 deg (i) Declination, J2000, decimal deg. (pos.eq.dec;meta.main)
VTmag 5.487 mag Tycho-2 VT magnitude (phot.mag;em.opt.V)
BTmag 5.728 mag Tycho-2 BT magnitude (phot.mag;em.opt.B)
r_SpTypemc2  Source of spectral type (Note 2)   (meta.ref)
Namehd 75149  Alternate designation for star (Note 3)   (meta.id)
Dist 0.051 arcsec Distance between Tycho object and spectral type match (Note 4)   (pos.angDistance)
Mag 5.80 mag Magnitude from SpType catalog (Note 5)   (phot.mag)
f_MagP   [VPBX*] Flag indicating type of magnitude (Note 6)   (meta.code.error)
TClassB  Temperature class (Note 7)   (src.spType)
SClass5   Temperature Subclass (Note 7)   (src.spType)
LClass1   Luminosity class in numeric form (Note 7)   (src.spType)
Teff13600 K Effective temperature of the star, based on spectral type (Note G1)   (phys.temperature.effective)
SpType B5 IAB  Spectral Type (Note 1)   (src.spType)

Tycho-2Tycho-2  Display the Tycho-2 (II/259) data (meta.ref)
MKMK  Find out all spectral classifications in the neighbourhood of this position (meta.ref)
SimbadSimbad  ask the Simbad data-base about this object (meta.ref)
  
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