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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=8454
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ColumnValue  Explain   (UCD)
_RAJ200012 19 06.0 "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+16 33 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)
_RAB195012 16 33.8 "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+16 49 39 "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)
_Glon265.9841 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+77.0399 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)
8454recno 8454  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Star B+17 2462  Identification for star (meta.id;meta.main)
RAJ200012 19.1 "h:m:s" (i) Right Ascension (J2000) hour (pos.eq.ra;meta.main)
DEJ2000+16 33 "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)
SpTypeG 2 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)
Vmag 7.07 mag Johnson V magnitude (phot.mag;em.opt.V)
f_B-V    [< ] Brackets mean average over cycle (meta.code;src.var)
B-V 0.62 mag B-V color (phot.color;em.opt.B;em.opt.V)
U-B .08 mag U-B color (phot.color;em.opt.U;em.opt.B)
Rem   Questions (meta.note)
OName107146  Alternate identification, usually HD (meta.id)
  
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