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VizieR

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VII/110A/table5 Rich Clusters of Galaxies (Abell+ 1989)
Supplementary southern clusters (1174 rows)
  recno=868
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ColumnValue  Explain   (UCD)
_RAJ200020 23 00.7 "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)
_DEJ2000-20 56 19 "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)
_RAB195020 20 06.0 "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)
_DEB1950-21 06 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)
_Glon022.8885 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-29.0986 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)
868recno 868  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

SS   [S] prefix to the supplementary southern cluster number (meta.id.part;meta.main)
ACOS 868  (i) [1,1174] "Abell" number for supplementary southern cluster (meta.id)
RAB195020 20.1 "h:m:s" (i) right ascension (B1950) (pos.eq.ra;meta.main)
DEB1950-21 06 "d:m:s" (i) declination (B1950) (pos.eq.dec;meta.main)
FieldF596   [0-9F] the Southern Sky Survey Field number in which the cluster is located (meta.id;obs.field)
Xcen 22 mm rectangular coordinates if the apparent cluster center, referred to the CENTER of the Southern Sky Survey Field (+ = east) (pos.cartesian.x;instr.plate)
Ycen -56 mm same with above (+ = north) (pos.cartesian.y;instr.plate)
AtypeRI   [ IR?:] cluster classification in Abell's system: I = irregular, R = regular, IR and RI = intermediate, ":" and "?" see file "docu.txt" (meta.note)
BMtypeI   [- I:?] cluster classification in the Bautz-Morgan system (src.class.struct)
Count 13 ct number of cluster members between m3 and m3+2, corrected for background (as a result of "universal" correction, it can be negative, see paper p11) (meta.number)
u_Count    [:*?)] uncertainty of the Count (meta.code.error;phot.count)
m114.8 mag weighted mean total V mag. estimated for the first-ranked cluster member (no galactic extinction correction has been applied) (phot.mag;em.opt.V)
u_m1    [:?*] ":" = s.d. of more than ±0.5mag "?" = s.d. of more than ±1.0mag "*: = known or probable foreground object (meta.code.error)
m315.1 mag weighted mean total V magnitude estimated for the third-ranked cluster member (again uncorrected) (phot.mag;em.opt.V)
u_m3    [:?*] same with u_m1 (meta.code.error)
m1016.7 mag weighted mean total V magnitude estimated for the tenth-ranked cluster member (again uncorrected) (phot.mag)
u_m10    [:?*] same with u_m1 (meta.code.error)
Prev    [ BDdKOQRSs] sources of previous listings B = Braid and MacGillivray (1978MNRAS.182..241B), etc. see file "docu.txt" (meta.note)
Xpos142 mm rectangular coordinates of the apparent cluster center, referred to the south-east (lower left) edge of the Southern Sky Survey Field (x coordinate) (pos.cartesian.x;instr.plate)
Ypos108 mm same with above (y coordinate) (pos.cartesian.y;instr.plate)
GLON 22.90 deg galactic longitude l2 (pos.galactic.lon)
GLAT-29.10 deg galactic latitude b2 (pos.galactic.lat)
z    cluster redshift from Struble and Rood (1987ApJS...63..555S) (src.redshift)
u_z    [)] uncertainty parenthesis, close (meta.code.error;src.redshift)
Rich0  richness, from Abell (1958ApJS....3..211A) (Note)   (src.class.richness)
Dclass5  distance class, from Abell (Note 1958)   (src.class.distance)
m10A16.8 mag magnitude of the tenth brightest cluster member, corrected for galactic extinction following Abell's formula (phot.mag)
NF_11   [1,4] number of fields in which the cluster was found (meta.number)
Obs_1O   [ACO] observer's initial (A = Abell, C = Corwin, O = Olowin) (obs.observer)
NF_2    [1,4] same with NF_1 (meta.note)
Obs_2    [ACO] same with Obs_1 (meta.note)

_RA.icrs20 23.0 "h:m:s" (i) Right ascension (ICRS) (computed by VizieR, not part of the original data) (pos.eq.ra)
_DE.icrs-20 56 "d:m:s" (i) Declination (ICRS) (computed by VizieR, not part of the original data) (pos.eq.dec)
  
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