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VizieR

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B/mk/mktypes Catalogue of Stellar Spectral Classifications (Skiff, 2009-2016)
The catalog of MK Spectral Types (Version 2014-May) (888588 rows)
  recno=773692
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Note: Details of surveyed literature

ColumnValue  Explain   (UCD)
_RAJ200020 20 08.7600 "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 43 53.700 "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)
_RAB195020 17 51.3883 "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 34 22.551 "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)
_Glon058.3297158 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-10.9789463 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)
773692recno 773692  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NameIC 4997  Star name as published or valid SIMBAD name (Lortet et al.) (meta.id)
Mag10.40 mag Magnitude, see passband in n_Mag (phot.mag)
n_MagV  Color passband of magnitude (Note 2)   (meta.note)
n_SpType    [+] if spectral type is an MK standard (meta.note)
SpTypePN  spectral type (MK, HD, or other) (src.spType)
Remarks[OI] 6363A, HeI D3 present  Comments (Note 3)   (meta.note)
Bibcode1977PW&SO...2...71S  Publication Source (meta.bib.bibcode)
RAJ200020 20 08.76 "h:m:s" (i) Right Ascension (J2000) hour (pos.eq.ra;meta.main)
DEJ2000+16 43 53.7 "d:m:s" (i) Declination (J2000) degree (pos.eq.dec;meta.main)
rcU  Source of coordinates (Note 1)   (meta.ref;pos.frame)

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