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=4390
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ColumnValue  Explain   (UCD)
_RAJ200012 17 23.3 "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)
_DEJ2000-09 56 20 "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 14 48.8 "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)
_DEB1950-09 39 40 "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)
_Glon289.2256 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+52.0245 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)
4390recno 4390  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NGC4240   [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 16.1 "h:m:s" (i) Right Ascension (1975) (pos.eq.ra;meta.main)
DE1975-09 48 "d:m:s" (i) Declination (1975) (pos.eq.dec;meta.main)
Xpos 39 mm Position eastwards on POSS blue print (pos.cartesian.x;instr.plate)
Ypos318 mm Position northwards on POSS blue print (pos.cartesian.y;instr.plate)
Mag14.0 mag Magnitude rounded to the nearest half magnitude (phot.mag)
r_Mag3   Source of Magnitude (Note 2)   (meta.ref)
OldDescPB,S,*12SP1/2'  Visual appearance of object transcribed from Dreyer J.L.E. (1888) (Note 3)   (src.morph.type)
NewDesc,R,BM,*CLOSE PR  Palomar Sky Survey Description of each object (Note 4)   (meta.note)
Notes   Cross References for RNGC objects (Note 5)   (meta.note)

_RA.icrs12 17.4 "h:m:s" (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs-09 56 "d:m:s" (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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