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VizieR

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J/AJ/146/85/table2 Spectral types of 1576 optical stars in ONC (Hillenbrand+, 2013)
ONC spectral types (1576 rows)
  recno=906
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ColumnValue  Explain   (UCD)
_RAJ200005 35 19.5000 "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)
_DEJ2000-05 22 21.400 "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)
_RAB195005 32 52.0153 "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)
_DEB1950-05 24 14.459 "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)
_Glon209.0006247 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-19.3650964 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)
906recno 906  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Star 617   [1/9326] Star identifier (Note 1)   (meta.id;meta.main)
m_Star    [ab] Component (a or b) (meta.code.multip)
f_Star    [e] Plate defects or nebular knots (Note 2)   (meta.code)
RAJ200005 35 19.50 "h:m:s" (i) Hour of Right Ascension (J2000) (pos.eq.ra;meta.main)
DEJ2000-05 22 21.4 "d:m:s" (i) Degree of Declination (J2000) (pos.eq.dec;meta.main)

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

SpT2M3.5  Newly reported spectral type (Note 4)   (src.spType)
f_SpT2    [f] Nebular contamination (Note 5)   (meta.code)
SpT1>=M6(H)  Previously reported spectral type (Note 3)   (src.spType)
  
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