VizieR

CfA VizieR . ADAC VizieR . Cambridge (UK) VizieR . IUCAA VizieR . INASAN VizieR .

VizieR

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VII/110A/table3 Rich Clusters of Galaxies (Abell+ 1989)
Revised northern "Abell Catalog" (2712 rows)
  ACO=21
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ColumnValue  Explain   (UCD)
_RAJ200000 20 30.8 "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+28 37 39 "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)
_RAB195000 17 54.0 "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+28 21 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)
_Glon114.7672 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-33.7536 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)
21recno 21  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

ACO 21  (i) [1,2712] "Abell" number (meta.id;meta.main)
RAB195000 17.9 "h:m:s" (i) right ascension (B1950) (pos.eq.ra;meta.main)
DEB1950+28 21 "d:m:s" (i) declination (B1950) (pos.eq.dec;meta.main)
BMtypeI:   [- I:] cluster classification in the Bautz- Morgan system (src.class.struct)
Count 56 ct [0,] number of cluster members between m3 and m3+2, corrected for background (meta.number)
Xpos 18 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)
Ypos 60 mm same with above (y coordinate) (pos.cartesian.y;instr.plate)
GLON114.77 deg galactic longitude l2 (pos.galactic.lon)
GLAT-33.75 deg galactic latitude b2 (pos.galactic.lat)
z 0.0948   cluster redshift from Struble and Rood (1987ApJS...63..555S) (src.redshift)
Rich1  richness, from Abell (1958ApJS....3..211A) (Note)   (src.class.richness)
Dclass4  distance class, from Abell (Note 1958)   (src.class.distance)
m1016.2 mag red magnitude of the tenth brightest cluster member, from Abell (1958) (phot.mag)

_RA.icrs00 20.5 "h:m:s" (i) Right ascension (ICRS) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DE.icrs+28 38 "d:m:s" (i) Declination (ICRS) (computed by VizieR, not part of the original data) (pos.eq.dec)
  
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