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)
  -c=NGC 4255,rm=5.0
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ColumnValue  Explain   (UCD)
_r0.8 arcmin Distance from center (12 17.7+04 55)[FK4/B1975] (pos.angDistance)
_RAJ200012 18 58.7 "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+04 47 41 "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)
4405recno 4405  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

NGC4255   [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 17.7 "h:m:s" (i) Right Ascension (1975) (pos.eq.ra;meta.main)
DE1975+04 56 "d:m:s" (i) Declination (1975) (pos.eq.dec;meta.main)
Xpos 16 mm Position eastwards on POSS blue print (pos.cartesian.x;instr.plate)
Ypos151 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)
OldDescS,PMBM  Visual appearance of object transcribed from Dreyer J.L.E. (1888) (Note 3)   (src.morph.type)
NewDescLEL,BM  Palomar Sky Survey Description of each object (Note 4)   (meta.note)
Notes,V  Cross References for RNGC objects (Note 5)   (meta.note)

_RA.icrs12 19.0 "h:m:s" (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+04 48 "d:m:s" (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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