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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=340104
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ColumnValue  Explain   (UCD)
_RAJ200006 12 21.2085792 "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)
_DEJ2000-72 48 28.136412 "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)
_RAB195006 13 22.9836750 "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)
_DEB1950-72 47 31.960657 "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)
_Glon283.5359518428 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-28.7020292364 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)
340104recno 340104  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC19172  First part of Tycho-2 identifier (meta.id.part;meta.main)
TYC2 835  Second part of Tycho-2 identifier (meta.id.part;meta.main)
TYC31  Third part of Tycho-2 identifier (meta.id.part;meta.main)
RAJ2000093.08836908 deg (i) Right Ascension, J2000, decimal deg. (pos.eq.ra;meta.main)
DEJ2000-72.80781567 deg (i) Declination, J2000, decimal deg. (pos.eq.dec;meta.main)
VTmag 9.057 mag Tycho-2 VT magnitude (phot.mag;em.opt.V)
BTmag 9.514 mag Tycho-2 BT magnitude (phot.mag;em.opt.B)
r_SpTypemc1  Source of spectral type (Note 2)   (meta.ref)
Namehd 44046  Alternate designation for star (Note 3)   (meta.id)
Dist 0.472 arcsec Distance between Tycho object and spectral type match (Note 4)   (pos.angDistance)
Mag 9.50 mag Magnitude from SpType catalog (Note 5)   (phot.mag)
f_MagP   [VPBX*] Flag indicating type of magnitude (Note 6)   (meta.code.error)
TClassF  Temperature class (Note 7)   (src.spType)
SClass2   Temperature Subclass (Note 7)   (src.spType)
LClass4   Luminosity class in numeric form (Note 7)   (src.spType)
Teff 6870 K Effective temperature of the star, based on spectral type (Note G1)   (phys.temperature.effective)
SpType F2 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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