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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=50549
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ColumnValue  Explain   (UCD)
_RAJ200008 57 35.2006320 "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+15 34 52.624704 "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 54 47.9769038 "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+15 46 29.224381 "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)
_Glon212.2817060730 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+34.8117684854 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)
50549recno 50549  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC11394  First part of Tycho-2 identifier (meta.id.part;meta.main)
TYC2 2121  Second part of Tycho-2 identifier (meta.id.part;meta.main)
TYC31  Third part of Tycho-2 identifier (meta.id.part;meta.main)
RAJ2000134.39666930 deg (i) Right Ascension, J2000, decimal deg. (pos.eq.ra;meta.main)
DEJ2000+15.58128464 deg (i) Declination, J2000, decimal deg. (pos.eq.dec;meta.main)
VTmag 5.705 mag Tycho-2 VT magnitude (phot.mag;em.opt.V)
BTmag 5.942 mag Tycho-2 BT magnitude (phot.mag;em.opt.B)
r_SpTypek83  Source of spectral type (Note 2)   (meta.ref)
Namehd 76582  Alternate designation for star (Note 3)   (meta.id)
Dist 0.531 arcsec Distance between Tycho object and spectral type match (Note 4)   (pos.angDistance)
Mag 5.67 mag Magnitude from SpType catalog (Note 5)   (phot.mag)
f_MagV   [VPBX*] Flag indicating type of magnitude (Note 6)   (meta.code.error)
TClassF  Temperature class (Note 7)   (src.spType)
SClass0   Temperature Subclass (Note 7)   (src.spType)
LClass4   Luminosity class in numeric form (Note 7)   (src.spType)
Teff 7150 K Effective temperature of the star, based on spectral type (Note G1)   (phys.temperature.effective)
SpType F 0 IV  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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