VizieR

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

VizieR

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VII/87A/catalog Data on 1889 Abell's clusters of galaxies (Leir+ 1977)
Table 1 of the paper, cols 1,6,7,9-11 (1889 rows)
  recno=17
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Note: Due to the very poor printing of the original catalog, several errors may exist in this electronic table; some were detected, but no systematic proofreading was performed

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)
17recno 17  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Abell 21  Abell cluster number (meta.id;meta.main)
BMclass 1.0   [1/3] Bautz-Morgan class (Note 1)   (src.class.struct)
u_BMclass:  Uncertainty symbol (:) on BMclass (meta.code.error)
Radius16 mm Apparent cluster radius on the red plate of the Palomar Sky Survey (Note 2)   (phys.angSize;src)
Gmaj 0.50 mm Apparent major axis of the brightest cluster member (Note 2)   (phys.angSize;src)
Gmin 0.20 mm Apparent minor axis of the brightest cluster member (Note 2)   (phys.angSize;src)
rmag14.4 mag Photo-red magnitude of the brightest cluster member corrected for absorption. (phot.mag;em.opt.R)

SimbadSimbad  ask the Simbad data-base about this object
NEDNED  ask the NED data-base about this object
_RA005.13 deg (i) Position (from Abell's catalog, 1989 version, Cat. VII/87) (right ascension part) (pos.eq.ra;meta.main)
_DE+28.63 deg (i) Position (from Abell's catalog, 1989 version, Cat. VII/87) (declination part) (pos.eq.dec;meta.main)
  
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