VizieR

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VizieR

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VII/110A/table3 Rich Clusters of Galaxies (Abell+ 1989)
Revised northern "Abell Catalog" (2712 rows)
  recno=426
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ColumnValue  Explain   (UCD)
_RAJ200003 18 36.4 "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+41 30 54 "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)
_RAB195003 15 18.0 "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+41 20 00 "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)
_Glon150.3817 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-13.3815 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)
426recno 426  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

ACO 426  (i) [1,2712] "Abell" number (meta.id;meta.main)
RAB195003 15.3 "h:m:s" (i) right ascension (B1950) (pos.eq.ra;meta.main)
DEB1950+41 20 "d:m:s" (i) declination (B1950) (pos.eq.dec;meta.main)
BMtypeII-III   [- I:] cluster classification in the Bautz- Morgan system (src.class.struct)
Count 88 ct [0,] number of cluster members between m3 and m3+2, corrected for background (meta.number)
Xpos 81 mm rectangular coordinates of the apparent cluster center, referred to the south-east (lower left) edge of the Palomar Sky Survey prints (x coordinate) (pos.cartesian.x;instr.plate)
Ypos120 mm same with above (y coordinate) (pos.cartesian.y;instr.plate)
GLON150.39 deg galactic longitude l2 (pos.galactic.lon)
GLAT-13.38 deg galactic latitude b2 (pos.galactic.lat)
z 0.0183   cluster redshift from Struble and Rood (1987ApJS...63..555S) (src.redshift)
Rich2  richness, from Abell (1958ApJS....3..211A) (Note)   (src.class.richness)
Dclass0  distance class, from Abell (Note 1958)   (src.class.distance)
m1012.5 mag red magnitude of the tenth brightest cluster member, from Abell (1958) (phot.mag)

_RA.icrs03 18.6 "h:m:s" (i) Right ascension (ICRS) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DE.icrs+41 31 "d:m:s" (i) Declination (ICRS) (computed by VizieR, not part of the original data) (pos.eq.dec)
  
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