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VizieR

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III/223/mk12 12th General Catalogue of MK Spectral Classification (Buscombe+ 1995)
Data for field stars (17438 rows)
  recno=2430
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ColumnValue  Explain   (UCD)
_RAJ200003 48 18.0 "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+11 09 00 "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)
_RAB195003 45 33.3 "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+10 59 50 "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)
_Glon177.1710 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-32.5242 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)
2430recno 2430  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

StarB B+10 486  Identification for star (meta.id;meta.main)
RAJ200003 48.3 "h:m:s" (i) Right Ascension (J2000) hour (pos.eq.ra;meta.main)
DEJ2000+11 09 "d:m:s" (i) Declination (J2000) degree (pos.eq.dec;meta.main)
u_DEJ2000    [: ] DEm uncertain (meta.code.error)
f_SpType    [(] Spectral type inferred from photometry (meta.code)
SpTypeF 3 V  MK spectral type (src.spType)
r_SpType    [* ] Asterisk = type from definers of MK (meta.ref;pos.frame)
f_Vmag    [< ] Brackets mean average over cycle (meta.code;src.var)
Vmag10.1 mag Johnson V magnitude (phot.mag;em.opt.V)
f_B-V    [< ] Brackets mean average over cycle (meta.code;src.var)
B-V  mag B-V color (phot.color;em.opt.B;em.opt.V)
U-B  mag U-B color (phot.color;em.opt.U;em.opt.B)
Rem   Questions (meta.note)
OName B  Alternate identification, usually HD (meta.id)
  
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