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VizieR

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III/42/catalog Selected MK Spectral Types (Jaschek, 1978)
The catalog of Selected MK Types (30361 rows)
  recno=2307
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ColumnValue  Explain   (UCD)
_RAJ200001 53 28.8 "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+19 17 35 "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)
_RAB195001 50 44.2 "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+19 02 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)
_Glon142.5336 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-41.2052 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)
2307recno 2307  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Number 1186  Running number in one of the original catalogues (meta.id)
catJ   [JK] Original catalogue: J or K (Note)   (meta.id)
Name 11502  Identification of the star (generally HD or DM number) (meta.id;meta.main)
RA190001 48.0 "h:m:s" (i) Right Ascension 1900 (pos.eq.ra;meta.main)
DE1900+18 48 "d:m:s" (i) Declination 1900 (pos.eq.dec;meta.main)
Vmag 4.80 mag V magnitude (Note)   (phot.mag;em.opt.V)
n_Vmag    [V] 'V' for variability (meta.note)
MK****  Source and ID of available MK types (meta.id;src.spType)
Ref 81  Reference number in the original catalogue (meta.id)
SpType B9. V COMP,VB  Selected MK spectral classification (src.spType)
q_SpTypeD   [A-D] Quelity of the classification, A=best (meta.code.qual;src.spType)
Disp 28 P 10-7 Dispersion used (in Angstroem/mm at Hγ) for the selected classification and system (Note)   (instr)
RefCode54.....4  Bibliographical coded Number, used for the BSI (Spite et al., 1980) (meta.ref;pos.frame)
BibCode1954ApJ...119..146S  Standardized bibliographical code (meta.bib.bibcode)

_RA.icrs01 53.5 "h:m:s" (i) Right ascension (ICRS) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DE.icrs+19 18 "d:m:s" (i) Declination (ICRS) (computed by VizieR, not part of the original data) (pos.eq.dec)
  
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