ACDS V10.0 -EPIC field of view cross-correlation results

creation date : Thu Apr 25 01:58:02 CEST 2019

XMM logo

Principal Investigator : Dr Ewan O'Sullivan
XMM Target name : NGC 7507
Observation number : 0502480101
Center coordinates : 23 12 02.700 -28 32 27.50
Observation start : 2007-05-13T11:08:27
Observation end : 2007-05-13T15:02:25
Exposure PN (s) : 12857.6
Exposure MOS1 (s) : 14367.8
Exposure MOS2 (s) : 14243.0

Catalogue configuration : CAT_15/31/2019_223_1
Cross-correlation made using corrected EPIC source coordinates
Astrometric PSF displacement applied
A systematic error taken from the SYSERRCC column has been added to EPIC X-ray positions


Simbad Astronomical Database

Simbad

 SRC_NUM  Chart             Name              XName              obj_type                 RAJ2000      DEJ2000    ErrPosMaj ErrPosMin ErrPosAng  mb    mv   SP/T mu_alpha mu_delta ErrMuMaj ErrMuMin ErrMuAng nref
                                                                                           h:m:s        d:m:s        mas       mas       deg                      mas/yr   mas/yr   mas/yr   mas/yr    deg        
                2dFGRS TGS264Z018                   Galaxy                              23 10 48.200 -28 31 43.00    1000.0    1000.0       180 17.85       ~                                               0    2
                2dFGRS TGS265Z072                   Galaxy                              23 10 56.400 -28 36 13.00    1000.0    1000.0       180 18.72       ~                                               0    2
                2dFGRS TGS264Z013                   Galaxy                              23 10 56.800 -28 31 30.00    1000.0    1000.0       180 18.62       ~                                               0    2
                2dFGRS TGS264Z016                   Galaxy                              23 10 56.850 -28 40 07.00     100.0     100.0       180 19.08       ~                                               0    1
                2dFGRS TGS266Z083                   Galaxy                              23 10 57.990 -28 35 50.20     100.0     100.0       180 18.56       ~                                               0    1
                2dFGRS TGS266Z084                   Galaxy                              23 10 59.630 -28 35 50.80     100.0     100.0       180 18.37       ~                                               0    1
                Gaia DR2 2378282271226662144        Star                                23 11 00.787 -28 28 10.98       0.7       0.9        90             ~      +1.825   +0.694    1.087    1.563       90    1
                2dFGRS TGS265Z064                   Galaxy                              23 11 11.030 -28 33 11.80     100.0     100.0       180 19.39       ~                                               0    1
                2dFGRS TGS265Z063                   Galaxy                              23 11 12.070 -28 38 39.40     100.0     100.0       180 19.36       ~                                               0    1
                2dFGRS TGS264Z007                   Galaxy                              23 11 14.520 -28 42 39.20     100.0     100.0       180 19.13       ~                                               0    1
                2dFGRS TGS265Z062                   Galaxy                              23 11 17.600 -28 44 17.00    1000.0    1000.0       180 18.66       ~                                               0    2
                2dFGRS TGS266Z080                   Galaxy                              23 11 21.300 -28 41 13.00    1000.0    1000.0       180 17.66       ~                                               0    2
                2dFGRS TGS266Z077                   Star,Galaxy                         23 11 25.485 -28 33 03.90       0.9       0.6        90 16.19       ~      -5.195   +1.225    2.065    1.318       90    3
                2dFGRS TGS265Z060                   Galaxy                              23 11 26.830 -28 37 11.00     100.0     100.0       180 18.85       ~                                               0    1
                2dFGRS TGS264Z003                   Galaxy                              23 11 27.400 -28 45 45.00    1000.0    1000.0       180 18.22       ~                                               0    2
                2dFGRS TGS266Z073                   Galaxy                              23 11 27.420 -28 28 57.80     100.0     100.0       180 19.40       ~                                               0    1
                2QZ J231127.8-284042                                                    23 11 27.790 -28 40 42.30    1000.0    1000.0        90             ~                                               0    1
       25 chart 2QZ J231129.5-282721                Star,QSO,QSO                        23 11 29.501 -28 27 21.19       0.8       0.8        90 20.51       ~      -2.171   -0.067    1.241    1.653       90    5
                2dFGRS TGS266Z074                   Galaxy                              23 11 29.710 -28 36 42.40     100.0     100.0       180 19.20       ~                                               0    1
                2dFGRS TGS265Z059                   Galaxy                              23 11 29.730 -28 30 41.90     100.0     100.0       180 19.19       ~                                               0    1
                2dFGRS TGS264Z002                   Galaxy                              23 11 31.770 -28 45 15.30     100.0     100.0       180 18.58       ~                                               0    1
                2dFGRS TGS265Z058                   Galaxy                              23 11 34.900 -28 41 16.00    1000.0    1000.0       180 17.98       ~                                               0    2
                2dFGRS TGS266Z068                   Galaxy                              23 11 38.650 -28 44 24.70     100.0     100.0       180 18.43       ~                                               0    1
                2dFGRS TGS266Z069                   Galaxy                              23 11 38.830 -28 46 25.50     100.0     100.0       180 18.74       ~                                               0    1
                2dFGRS TGS266Z067                   Galaxy                              23 11 39.630 -28 35 33.20     100.0     100.0       180 19.16       ~                                               0    1
                2MASS J23114040-2842522             Star,Star,IR                        23 11 40.389 -28 42 51.80       0.7       0.4        90 20.33       ~     +17.887  +29.783    1.049    0.759       90    2
                2QZ J231141.1-281837                Star,QSO,QSO                        23 11 41.162 -28 18 37.52       2.0       1.8        90 20.36       ~      +4.103   -0.585    4.061    3.353       90    5
       22 chart [VV2003] J231142.0-282029           Star,QSO,QSO                        23 11 41.982 -28 20 29.61       0.2       0.2        90       19.19 ~      -0.145   -0.315    0.437    0.390       90    4
                2dFGRS TGS265Z053                   Galaxy                              23 11 42.360 -28 26 09.30     100.0     100.0       180 19.49       ~                                               0    1
                2dFGRS TGS265Z054                   Galaxy                              23 11 44.310 -28 35 58.30     100.0     100.0       180 19.01       ~                                               0    1
                2dFGRS TGS266Z064                   Galaxy                              23 11 44.450 -28 41 48.30     100.0     100.0       180 18.81       ~                                               0    1
                2dFGRS TGS265Z055                   Galaxy                              23 11 45.270 -28 43 08.90     100.0     100.0       180 19.18       ~                                               0    1
                2dFGRS TGS266Z065                   Galaxy                              23 11 45.300 -28 43 24.00    1000.0    1000.0       180 18.31       ~                                               0    2
                2dFGRS TGS266Z059                   Galaxy                              23 11 46.800 -28 31 45.00    1000.0    1000.0       180 16.39       ~                                               0    6
                2dFGRS TGS265Z050                   Galaxy                              23 11 47.110 -28 44 15.60     100.0     100.0       180 19.44       ~                                               0    1
                [VC94] NGC 7507  1                  Galaxy                              23 11 47.600 -28 31 46.00   15000.0   15000.0        90             ~                                               0    1
                2dFGRS TGS266Z060                   Galaxy                              23 11 48.440 -28 36 50.20     100.0     100.0       180 19.07       ~                                               0    1
                2dFGRS TGS266Z062                   Galaxy                              23 11 49.000 -28 47 05.20     100.0     100.0       180 18.67       ~                                               0    1
        9 chart 2QZ J231149.2-284604                Star,QSO,QSO                        23 11 49.285 -28 46 04.24       0.7       0.6        90 19.20       ~      +1.748   +1.638    1.139    1.246       90    5
                [VV2003] J231150.0-281823           Star,QSO,QSO                        23 11 49.977 -28 18 23.52       0.5       0.4        90 20.63       ~      +2.006   -0.554    1.056    0.813       90    5
                Gaia DR2 2378294194058343936        Star                                23 11 50.045 -28 23 03.12       0.5       0.4        90             ~      +3.931  -11.163    0.999    0.868       90    1
                2dFGRS TGS266Z061                   Galaxy                              23 11 50.530 -28 39 46.80     100.0     100.0       180 19.16       ~                                               0    1
                2dFGRS TGS265Z049                   Galaxy                              23 11 50.550 -28 43 16.60     100.0     100.0       180 18.15       ~                                               0    1
                APMBGC 469-107-081                  Galaxy                              23 11 50.870 -28 19 03.30    1000.0    1000.0        90 16.21       ~                                               0    1
                LEDA  133456                        Galaxy,Galaxy                       23 11 51.920 -28 18 59.50     100.0     100.0       180 16.73       ~                                               0    5
                2dFGRS TGS266Z057                   Galaxy                              23 11 53.060 -28 41 13.10     100.0     100.0       180 19.22       ~                                               0    1
       41 chart 2dFGRS TGS266Z056                   Galaxy                              23 11 54.100 -28 36 05.00    1000.0    1000.0       180 18.44       ~                                               0    2
                CD-29 18610                         Star,PM*,IR                         23 11 54.315 -28 31 24.27       0.1       0.1        90 12.54 11.70 ~    +184.749  +17.549    0.149    0.134       90    0
                2dFGRS TGS266Z054                   Galaxy                              23 11 55.230 -28 20 42.70     100.0     100.0       180 19.46       ~                                               0    1
                2dFGRS TGS265Z046                   Galaxy                              23 11 57.610 -28 27 12.20     100.0     100.0       180 19.30       ~                                               0    1
                2dFGRS TGS265Z047                   Galaxy                              23 11 57.700 -28 40 40.80     100.0     100.0       180 19.50       ~                                               0    1
                2QZ J231159.0-283658                Star,QSO,QSO                        23 11 59.079 -28 36 58.62       0.6       0.6        90 20.30       ~      -1.072   -1.709    0.957    1.176       90    5
                2dFGRS TGS265Z048                   Galaxy                              23 12 00.020 -28 41 08.60     100.0     100.0       180 19.01       ~                                               0    1
                [SHM2017] J348.00181-28.74612       Candidate_RRLyr,Star,RRLyr          23 12 00.440 -28 44 46.03       0.1       0.1        90       16.76 ~      -3.391   -4.204    0.162    0.180       90    2
                2dFGRS TGS266Z051                   Galaxy                              23 12 02.410 -28 31 52.10     100.0     100.0       180 17.08       ~                                               0    1
                2dFGRS TGS265Z045                   Galaxy                              23 12 03.220 -28 29 44.60     100.0     100.0       180 19.66       ~                                               0    1
                2dFGRS TGS266Z052                   Galaxy                              23 12 03.300 -28 33 34.40     100.0     100.0       180 17.98       ~                                               0    1
                2MASS J23120372-2834519             Star,PM*,IR                         23 12 03.725 -28 34 51.91       0.0       0.0        90 16.30       ~     +27.300  -44.583    0.074    0.075       90    2
                2dFGRS TGS266Z048                   Galaxy                              23 12 05.790 -28 22 22.70     100.0     100.0       180 19.33       ~                                               0    1
                2QZ J231206.5-283316                Star,Star                           23 12 06.490 -28 33 16.70    1000.0    1000.0        90 20.83       ~                                               0    2
        4 chart AM 2309-284                         PairG,Star,Galaxy,GinGroup,GinGroup 23 12 07.595 -28 32 22.70      10.0      10.0       180 11.60       ~                                               0  160
                2dFGRS TGS266Z049                   Galaxy                              23 12 09.120 -28 28 56.50     100.0     100.0       180 18.16       ~                                               0    1
                [VC94] NGC 7507  3                  Galaxy                              23 12 09.500 -28 28 58.00   15000.0   15000.0        90             ~                                               0    2
                2dFGRS TGS265Z044                   Star,Galaxy,Galaxy                  23 12 09.621 -28 25 54.24       2.3       2.5        90 16.54       ~                                               0    9
                2dFGRS TGS266Z050                   Galaxy                              23 12 09.880 -28 39 46.60     100.0     100.0       180 19.10       ~                                               0    1
                2QZ J231210.9-283747                HII_G,EmG                           23 12 10.900 -28 37 47.00    1000.0    1000.0        90 20.17       ~                                               0    1
                2QZ J231212.0-283711                Star,QSO,QSO                        23 12 12.034 -28 37 11.03       1.3       1.4        90 20.80       ~      +0.300   +0.629    2.988    3.423       90    5
                2dFGRS TGS266Z047                   Galaxy                              23 12 12.460 -28 44 32.00     100.0     100.0       180 19.18       ~                                               0    1
                TYC 6978-806-1                      Star,IR                             23 12 15.828 -28 22 47.37       0.0       0.0        90 12.25 11.77 ~      +8.832   +3.195    0.069    0.071       90    0
                2dFGRS TGS266Z046                   Galaxy                              23 12 15.990 -28 36 54.20     100.0     100.0       180 19.16       ~                                               0    1
                2dFGRS TGS265Z043                   Galaxy                              23 12 16.100 -28 38 06.00    1000.0    1000.0       180 18.71       ~                                               0    2
                2dFGRS TGS265Z040                   Galaxy                              23 12 19.950 -28 43 18.40     100.0     100.0       180 19.25       ~                                               0    1
                2MASS J23122346-2840504             Star,IR                             23 12 23.477 -28 40 50.54       0.0       0.0        90 12.09 11.46 ~     +19.886   -1.582    0.077    0.076       90    3
                2dFGRS TGS265Z037                   Galaxy                              23 12 23.800 -28 43 45.00    1000.0    1000.0       180 17.25       ~                                               0    2
                2dFGRS TGS266Z043                   Galaxy                              23 12 26.500 -28 28 55.00    1000.0    1000.0       180 18.45       ~                                               0    2
                2QZ J231226.8-282242                Star,QSO,QSO                        23 12 26.856 -28 22 41.98       0.6       0.6        90 20.40       ~      +0.636   -1.457    1.275    1.183       90    5
                2dFGRS TGS188Z048                   Galaxy                              23 12 28.730 -28 17 27.50     100.0     100.0       180 19.06       ~                                               0    1
                2QZ J231229.0-282254                                                    23 12 29.000 -28 22 54.40    1000.0    1000.0        90             ~                                               0    1
       15 chart CD-29 18615                         Star,IR                             23 12 29.083 -28 36 17.44       0.0       0.0        90 11.05 10.60 ~      +7.095  -13.488    0.075    0.069       90    0
                2dFGRS TGS266Z044                   Galaxy                              23 12 30.500 -28 41 53.00    1000.0    1000.0       180 18.27       ~                                               0    2
                2dFGRS TGS265Z035                   Galaxy                              23 12 32.240 -28 37 40.50     100.0     100.0       180 18.70       ~                                               0    1
                2dFGRS TGS266Z040                   Galaxy                              23 12 33.870 -28 23 59.20     100.0     100.0       180 19.43       ~                                               0    1
                2QZ J231234.3-283732                Star                                23 12 34.300 -28 37 32.10    1000.0    1000.0        90             ~                                               0    1
                2dFGRS TGS265Z036                   Galaxy                              23 12 34.570 -28 41 32.20     100.0     100.0       180 19.13       ~                                               0    1
                2dFGRS TGS265Z034                   Galaxy                              23 12 35.340 -28 32 54.50     100.0     100.0       180 18.99       ~                                               0    1
                2dFGRS TGS266Z038                   Galaxy                              23 12 35.520 -28 20 08.50     100.0     100.0       180 19.32       ~                                               0    1
                LEDA  737863                        Galaxy                              23 12 37.000 -28 45 12.00    1000.0    1000.0       180             ~                                               0    1
       11 chart 2QZ J231239.2-282548                Star,QSO,QSO                        23 12 39.243 -28 25 47.86       0.9       1.5        90       19.83 ~      +1.430   -1.693    1.756    2.420       90    4
                [T2015] nest 202707                 GroupG,PairG                        23 12 40.300 -28 27 00.40     100.0     100.0       180             ~                                               0    3
                NOGG H 1055                         GroupG                              23 12 40.400 -28 27 01.00    1000.0    1000.0       180             ~                                               0    1
                CD-28 18115                         Star,PM*,IR                         23 12 40.997 -28 18 33.22       0.0       0.0        90 10.87 10.17 ~    +117.284   -0.143    0.082    0.075       90    0
                2dFGRS TGS266Z036                   Galaxy                              23 12 41.200 -28 23 14.00    1000.0    1000.0       180 17.75       ~                                               0    2
                2QZ J231244.6-284223                Star,QSO,QSO                        23 12 44.674 -28 42 23.67       0.8       0.7        90 20.29       ~      +2.684   -2.314    1.191    1.316       90    5
       39 chart 2dFGRS TGS266Z034                   Galaxy                              23 12 45.400 -28 29 20.10     100.0     100.0       180 19.43       ~                                               0    1
                2dFGRS TGS266Z035                   Galaxy                              23 12 46.970 -28 40 52.00     100.0     100.0       180 18.78       ~                                               0    1
                Gaia DR2 2378297977921033728        Star                                23 12 47.795 -28 21 23.29       0.7       0.6        90             ~      -0.597   -1.694    1.435    1.245       90    1
                2dFGRS TGS265Z030                   Galaxy                              23 12 47.900 -28 42 19.00    1000.0    1000.0       180 18.33       ~                                               0    2
                2dFGRS TGS266Z033                   Galaxy                              23 12 51.160 -28 22 11.30     100.0     100.0       180 19.23       ~                                               0    1
       10 chart 2QZ J231254.0-283701                Star,QSO,QSO                        23 12 54.026 -28 37 01.31       0.2       0.3        90       18.86 ~      +0.642   +0.019    0.454    0.465       90    4
       38 chart 2QZ J231256.0-284203                Star,QSO,QSO                        23 12 55.999 -28 42 03.16       0.5       0.4        90       19.54 ~      +0.767   +0.705    1.020    0.728       90    4
                2dFGRS TGS265Z022                   Galaxy                              23 12 56.480 -28 41 49.90     100.0     100.0       180 19.15       ~                                               0    1
                Gaia DR2 2378296672250866688        Star,Star                           23 12 58.939 -28 23 57.31       0.7       0.7        90 20.42       ~      +2.326   -2.915    1.214    1.374       90    2
                ACO  3980                           ClG                                 23 12 59.610 -28 23 16.20     100.0     100.0       180             ~                                               0    5
                ESO 469-21                          Galaxy,BClG,BClG                    23 12 59.612 -28 23 16.99      10.0      10.0       180 23.00       ~                                               0    2
                2dFGRS TGS266Z029                   Galaxy                              23 12 59.620 -28 23 16.40     100.0     100.0       180 18.63       ~                                               0    1
                2dFGRS TGS265Z023                   Galaxy                              23 13 01.100 -28 41 58.00    1000.0    1000.0       180 18.01       ~                                               0    2
                2dFGRS TGS266Z028                   Galaxy                              23 13 02.800 -28 22 37.00    1000.0    1000.0       180 19.21       ~                                               0    2
                2dFGRS TGS266Z031                   Galaxy                              23 13 03.820 -28 31 21.10     100.0     100.0       180 19.01       ~                                               0    1
                2dFGRS TGS266Z030                   Galaxy                              23 13 03.920 -28 27 43.60     100.0     100.0       180 19.21       ~                                               0    1
                2dFGRS TGS265Z020                   Galaxy                              23 13 04.460 -28 24 09.40     100.0     100.0       180 17.37       ~                                               0    1
                2dFGRS TGS266Z023                   Galaxy                              23 13 10.530 -28 27 13.20     100.0     100.0       180 19.17       ~                                               0    1
                2dFGRS TGS266Z024                   Galaxy                              23 13 10.840 -28 33 55.50     100.0     100.0       180 19.28       ~                                               0    1
                2dFGRS TGS266Z020                   Galaxy                              23 13 15.660 -28 32 23.00     100.0     100.0       180 19.39       ~                                               0    1
                Gaia DR2 2378248083286431488        Star,Star                           23 13 17.483 -28 31 30.72       0.7       0.7        90 20.67       ~      -3.163   -5.071    1.142    1.262       90    2

ESO/Uppsala Survey of the ESO(B) Atlas (Lauberts 1982)

VII/34C/catalog

 SRC_NUM  Chart recno  RA1950   DE1950     ESO       ID     X    Y   MajAxis u_MajAxis MinAxis u_MinAxis PA  u_PA MType        Class           Desc    FlagN FlagM FlagRC FlagV FlagA Bmag  e_Bmag apBmag r_Bmag B-V  U-B  r_B-V  RV  e_RV r_RV
                      "h:m:s"  "d:m:s"                     mm    mm  arcmin            arcmin            deg                                                                           mag   mag   arcsec        mag  mag        km/s km/s     
        3 chart 17833 23 09 26 -28 48.8 469- G  19 N 7507 111.8 69.7     2.4 :             2.4 :             :       -3 E - SO              B in group       1     2                  11.30   0.10        2      0.93 0.58 2     1548   12 3   
        4 chart 17833 23 09 26 -28 48.8 469- G  19 N 7507 111.8 69.7     2.4 :             2.4 :             :       -3 E - SO              B in group       1     2                  11.30   0.10        2      0.93 0.58 2     1548   12 3   
       17 chart 17833 23 09 26 -28 48.8 469- G  19 N 7507 111.8 69.7     2.4 :             2.4 :             :       -3 E - SO              B in group       1     2                  11.30   0.10        2      0.93 0.58 2     1548   12 3   
                17840 23 10 19 -28 39.4 469- G  21        122.3 77.9     4.0 :                                          Cluster of galaxies e distant                                                                                          

Catalogue of Southern Peculiar Galaxies and Associations (Arp+, 1987)

VII/170/catalog

 SRC_NUM  Chart recno FCflag    AM    n_AM  RA1950   DE1950  GLON   GLAT   SGL  SGB  n_Diam  Diam  CD1 CD2 CD3 CD4 CD5 ESO/SERC SERC-J Xpos Ypos                         Desc                         
                                           "h:m:s"  "d:m:s"   deg   deg    deg  deg         arcmin                                      mm   mm                                                       
        1 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
        3 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
        4 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
        7 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       15 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       17 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       21 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       23 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       24 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       26 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       28 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       41 chart  6065        2309-284      23 09 26 -28 48.7 23.41 -68.04 261.0 13.7 S         4.5   8                      469   3508   68  242 E + 5 COMP'NS.                    NGC 7507 = 469-G-19
       32 chart  6072        2310-283      23 10 19 -28 39.2 23.86 -68.22 261.2 13.6 D         3.6  19                      469   3508   57  250 BACKGROUND CLUSTER of GALAXIES    469-G-21           
       36 chart  6072        2310-283      23 10 19 -28 39.2 23.86 -68.22 261.2 13.6 D         3.6  19                      469   3508   57  250 BACKGROUND CLUSTER of GALAXIES    469-G-21