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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=350247
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ColumnValue  Explain   (UCD)
_RAJ200023 38 23.8915536 "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)
_DEJ2000-76 52 10.407684 "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)
_RAB195023 35 20.9258887 "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)
_DEB1950-77 08 47.669490 "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)
_Glon308.2245777044 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-39.4985798779 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)
350247recno 350247  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC19477  First part of Tycho-2 identifier (meta.id.part;meta.main)
TYC2 658  Second part of Tycho-2 identifier (meta.id.part;meta.main)
TYC31  Third part of Tycho-2 identifier (meta.id.part;meta.main)
RAJ2000354.59954814 deg (i) Right Ascension, J2000, decimal deg. (pos.eq.ra;meta.main)
DEJ2000-76.86955769 deg (i) Declination, J2000, decimal deg. (pos.eq.dec;meta.main)
VTmag 6.085 mag Tycho-2 VT magnitude (phot.mag;em.opt.V)
BTmag 7.132 mag Tycho-2 BT magnitude (phot.mag;em.opt.B)
r_SpTypemc1  Source of spectral type (Note 2)   (meta.ref)
Namehd 222060  Alternate designation for star (Note 3)   (meta.id)
Dist 0.676 arcsec Distance between Tycho object and spectral type match (Note 4)   (pos.angDistance)
Mag 7.00 mag Magnitude from SpType catalog (Note 5)   (phot.mag)
f_MagP   [VPBX*] Flag indicating type of magnitude (Note 6)   (meta.code.error)
TClassK  Temperature class (Note 7)   (src.spType)
SClass0   Temperature Subclass (Note 7)   (src.spType)
LClass2   Luminosity class in numeric form (Note 7)   (src.spType)
Teff 4750 K Effective temperature of the star, based on spectral type (Note G1)   (phys.temperature.effective)
SpType K0 II/III  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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