VizieR

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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=128606
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ColumnValue  Explain   (UCD)
_RAJ200020 53 18.5672784 "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+45 10 54.026652 "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)
_RAB195020 51 33.6899629 "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+44 59 29.355029 "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)
_Glon085.5202155458 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+00.3073967713 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)
128606recno 128606  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC13575  First part of Tycho-2 identifier (meta.id.part;meta.main)
TYC2 6350  Second part of Tycho-2 identifier (meta.id.part;meta.main)
TYC31  Third part of Tycho-2 identifier (meta.id.part;meta.main)
RAJ2000313.32736366 deg (i) Right Ascension, J2000, decimal deg. (pos.eq.ra;meta.main)
DEJ2000+45.18167407 deg (i) Declination, J2000, decimal deg. (pos.eq.dec;meta.main)
VTmag 5.583 mag Tycho-2 VT magnitude (phot.mag;em.opt.V)
BTmag 6.854 mag Tycho-2 BT magnitude (phot.mag;em.opt.B)
r_SpTypej64  Source of spectral type (Note 2)   (meta.ref)
Namehd 199098  Alternate designation for star (Note 3)   (meta.id)
Dist 0.078 arcsec Distance between Tycho object and spectral type match (Note 4)   (pos.angDistance)
Mag 5.60 mag Magnitude from SpType catalog (Note 5)   (phot.mag)
f_MagX   [VPBX*] Flag indicating type of magnitude (Note 6)   (meta.code.error)
TClassG  Temperature class (Note 7)   (src.spType)
SClass8   Temperature Subclass (Note 7)   (src.spType)
LClass3   Luminosity class in numeric form (Note 7)   (src.spType)
Teff 4900 K Effective temperature of the star, based on spectral type (Note G1)   (phys.temperature.effective)
SpType G8III  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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