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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=204447
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ColumnValue  Explain   (UCD)
_RAJ200022 31 41.3203680 "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)
_DEJ2000-10 54 20.030364 "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)
_RAB195022 29 02.5743594 "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)
_DEB1950-11 09 46.483141 "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)
_Glon052.3905767828 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-53.3873057159 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)
204447recno 204447  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC15814  First part of Tycho-2 identifier (meta.id.part;meta.main)
TYC2 1594  Second part of Tycho-2 identifier (meta.id.part;meta.main)
TYC31  Third part of Tycho-2 identifier (meta.id.part;meta.main)
RAJ2000337.92216820 deg (i) Right Ascension, J2000, decimal deg. (pos.eq.ra;meta.main)
DEJ2000-10.90556399 deg (i) Declination, J2000, decimal deg. (pos.eq.dec;meta.main)
VTmag 6.418 mag Tycho-2 VT magnitude (phot.mag;em.opt.V)
BTmag 6.733 mag Tycho-2 BT magnitude (phot.mag;em.opt.B)
r_SpTypemc5  Source of spectral type (Note 2)   (meta.ref)
Namehd 213464  Alternate designation for star (Note 3)   (meta.id)
Dist 0.664 arcsec Distance between Tycho object and spectral type match (Note 4)   (pos.angDistance)
Mag 6.66 mag Magnitude from SpType catalog (Note 5)   (phot.mag)
f_MagP   [VPBX*] Flag indicating type of magnitude (Note 6)   (meta.code.error)
TClassA  Temperature class (Note 7)   (src.spType)
SClass9   Temperature Subclass (Note 7)   (src.spType)
LClass5   Luminosity class in numeric form (Note 7)   (src.spType)
Teff 7850 K Effective temperature of the star, based on spectral type (Note G1)   (phys.temperature.effective)
SpType A9/F0 V  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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