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=241284
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ColumnValue  Explain   (UCD)
_RAJ200015 53 36.7181256 "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)
_DEJ2000-25 19 37.695108 "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)
_RAB195015 50 36.2020798 "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)
_DEB1950-25 10 47.019817 "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)
_Glon346.8768140693 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+21.6133870509 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)
241284recno 241284  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

TYC16782  First part of Tycho-2 identifier (meta.id.part;meta.main)
TYC2 2147  Second part of Tycho-2 identifier (meta.id.part;meta.main)
TYC31  Third part of Tycho-2 identifier (meta.id.part;meta.main)
RAJ2000238.40299219 deg (i) Right Ascension, J2000, decimal deg. (pos.eq.ra;meta.main)
DEJ2000-25.32713753 deg (i) Declination, J2000, decimal deg. (pos.eq.dec;meta.main)
VTmag 4.694 mag Tycho-2 VT magnitude (phot.mag;em.opt.V)
BTmag 4.581 mag Tycho-2 BT magnitude (phot.mag;em.opt.B)
r_SpTypemc4  Source of spectral type (Note 2)   (meta.ref)
Namehd 142114  Alternate designation for star (Note 3)   (meta.id)
Dist 0.243 arcsec Distance between Tycho object and spectral type match (Note 4)   (pos.angDistance)
Mag 4.49 mag Magnitude from SpType catalog (Note 5)   (phot.mag)
f_MagP   [VPBX*] Flag indicating type of magnitude (Note 6)   (meta.code.error)
TClassB  Temperature class (Note 7)   (src.spType)
SClass2   Temperature Subclass (Note 7)   (src.spType)
LClass5   Luminosity class in numeric form (Note 7)   (src.spType)
Teff22000 K Effective temperature of the star, based on spectral type (Note G1)   (phys.temperature.effective)
SpType B2.5 VN  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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