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VizieR

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B/mk/mktypes Catalogue of Stellar Spectral Classifications (Skiff, 2009- )
The catalog of MK Spectral Types (911723 rows)
  recno=657368
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Note: Details of surveyed literature

ColumnValue  Explain   (UCD)
_RAJ200016 39 08.2000 "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+28 39 01.600 "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)
_RAB195016 37 08.6745 "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+28 44 51.835 "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)
_Glon048.7501567 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+40.1553438 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)
657368recno 657368  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NameSDSS J163908.20+283901.6  Star name as published or valid SIMBAD name (Lortet et al.) (meta.id)
Mag19.53 mag Magnitude, see passband in n_Mag (phot.mag)
n_MagI  Color passband of magnitude (Note 2)   (meta.note)
n_SpType    [+] if spectral type is an MK standard (meta.note)
SpTypeM9  spectral type (MK, HD, or other) (src.spType)
Remarks   Comments (Note 3)   (meta.note)
Bibcode2010MNRAS.404.1817Z  Publication Source (meta.bib.bibcode)
RAJ200016 39 08.20 "h:m:s" (i) Right Ascension (J2000) hour (pos.eq.ra;meta.main)
DEJ2000+28 39 01.6 "d:m:s" (i) Declination (J2000) degree (pos.eq.dec;meta.main)
rcS  Source of coordinates (Note 1)   (meta.ref;pos.frame)

SimbadSimbad  ask the SIMBAD data-base about this object (meta.ref)
  
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