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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=51104
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ColumnValue  Explain   (UCD)
_RAJ200009 27 55.6487640 "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+17 39 12.107016 "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)
_RAB195009 25 08.6173625 "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+17 52 17.666744 "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)
_Glon213.2629843908 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+42.3299857020 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)
51104recno 51104  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC11406  First part of Tycho-2 identifier (meta.id.part;meta.main)
TYC2 449  Second part of Tycho-2 identifier (meta.id.part;meta.main)
TYC31  Third part of Tycho-2 identifier (meta.id.part;meta.main)
RAJ2000141.98186985 deg (i) Right Ascension, J2000, decimal deg. (pos.eq.ra;meta.main)
DEJ2000+17.65336306 deg (i) Declination, J2000, decimal deg. (pos.eq.dec;meta.main)
VTmag 9.445 mag Tycho-2 VT magnitude (phot.mag;em.opt.V)
BTmag10.120 mag Tycho-2 BT magnitude (phot.mag;em.opt.B)
r_SpTypeppN  Source of spectral type (Note 2)   (meta.ref)
Nameppm 126481  Alternate designation for star (Note 3)   (meta.id)
Dist 0.614 arcsec Distance between Tycho object and spectral type match (Note 4)   (pos.angDistance)
Mag 9.40 mag Magnitude from SpType catalog (Note 5)   (phot.mag)
f_MagP   [VPBX*] Flag indicating type of magnitude (Note 6)   (meta.code.error)
TClassG  Temperature class (Note 7)   (src.spType)
SClass0   Temperature Subclass (Note 7)   (src.spType)
LClass    Luminosity class in numeric form (Note 7)   (src.spType)
Teff 6030 K Effective temperature of the star, based on spectral type (Note G1)   (phys.temperature.effective)
SpType G0  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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