VizieR

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VizieR

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VII/1B/catalog Revised New General Catalogue (Sulentic+, 1973)
The Revised NGC Catalog (8163 rows)
  recno=4947
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ColumnValue  Explain   (UCD)
_RAJ200012 52 55.0 "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)
_DEJ2000-15 24 08 "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 50 17.2 "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)
_DEB1950-15 07 51 "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)
_Glon303.4591 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+47.4680 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)
4947recno 4947  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NGC4756   [1/7840] The original NGC number (meta.id;meta.main)
m_NGC   Component of NGC (Note 6)   (meta.code.multip)
Type 5  Type of object (Note 1)   (src.class)
RA197512 51.6 "h:m:s" (i) Right Ascension (1975) (pos.eq.ra;meta.main)
DE1975-15 16 "d:m:s" (i) Declination (1975) (pos.eq.dec;meta.main)
Xpos204 mm Position eastwards on POSS blue print (pos.cartesian.x;instr.plate)
Ypos 31 mm Position northwards on POSS blue print (pos.cartesian.y;instr.plate)
Mag13.5 mag Magnitude rounded to the nearest half magnitude (phot.mag)
r_Mag1   Source of Magnitude (Note 2)   (meta.ref)
OldDescVF,PS,RESOLVABLE  Visual appearance of object transcribed from Dreyer J.L.E. (1888) (Note 3)   (src.morph.type)
NewDesc,R,BM,SLDIF  Palomar Sky Survey Description of each object (Note 4)   (meta.note)
Notes,V*  Cross References for RNGC objects (Note 5)   (meta.note)

_RA.icrs12 52.9 "h:m:s" (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs-15 24 "d:m:s" (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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