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=4548
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ColumnValue  Explain   (UCD)
_RAJ200012 25 52.2 "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+10 27 42 "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 23 19.8 "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+10 44 18 "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)
_Glon281.8522 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+72.2789 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)
4548recno 4548  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NGC4390   [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 24.6 "h:m:s" (i) Right Ascension (1975) (pos.eq.ra;meta.main)
DE1975+10 36 "d:m:s" (i) Declination (1975) (pos.eq.dec;meta.main)
Xpos242 mm Position eastwards on POSS blue print (pos.cartesian.x;instr.plate)
Ypos137 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_Mag2   Source of Magnitude (Note 2)   (meta.ref)
OldDescVF,PL,R  Visual appearance of object transcribed from Dreyer J.L.E. (1888) (Note 3)   (src.morph.type)
NewDesc,R,BM,VKNY  Palomar Sky Survey Description of each object (Note 4)   (meta.note)
Notes,Z,V,IC3319&20  Cross References for RNGC objects (Note 5)   (meta.note)

_RA.icrs12 25.9 "h:m:s" (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+10 28 "d:m:s" (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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