A List of the Nearest Superclusters

It has been long known that galaxies tend to congregate into clusters. In the last 25 years it has also been realised that clusters of galaxies also cluster into vast sheets and filaments. These are commonly known as superclusters. The supercluster which we are a member of - the Virgo supercluster - is a fairly minor supercluster. Many others are known about which are far larger - most notably the Shapley supercluster and the Horologium supercluster which are hundreds of millions of light years across.

Below is a list of most of the major known superclusters within 1 billion light years. With one exception, all of these superclusters contain at least 3 rich clusters of galaxies (Abell clusters) together with hundreds of other poorer clusters. Note that our own supercluster only contains one really rich cluster (the Virgo cluster), and hence is too insignificant to make it onto this list.

     1             2    3    4   5      6      7    8      9            10
Common Name     Equatorial  Supergal Redshift Dis  Size   Con      Abell clusters in the supercluster
                  Coords     Coords     z     Mly  Mly
                  RA   Dec   L  B
Centaurus        13.0  -32  148  -7   0.014   194  150   Cen-Hya   1060, 3526, 3565, 3574, 3581.
Perseus-Pisces   02.5  +40  341  -8   0.016   222  100   Per-And   262, 347, 426.
Pavo-Indus       20.6  -37  230 +32   0.017   235  100   Ind-Mic   3656, 3698, 3742.
Coma             12.4  +24   91  -1   0.021   290  100   Com-Leo   1367, 1656.
Phoenix          00.9  -48  249 -11   0.027   372  150   Phe-Scl   2731, 2806, 2836, 2870, 2877, 2896.
Hercules (a)     16.4  +37   77 +50   0.030   413  100   Her-CBo   2162, 2197, 2199.
Leo              11.1  +23   85 -18   0.032   440  150   Leo-Uma   999, 1016, 1142, 1177, 1185, 1228, 1257, 1267.
Shapley (a)      13.9  -32  151  +3   0.037   507  100   Cen-Hya   3570, 3571, 3575, 3578.
Hercules (b)     15.8  +16  109 +45   0.037   507  150   Her-Ser   2052, 2063, 2107, 2147, 2148, 2151, 2152.
                 06.0  -27  255 -73   0.038   521  200   Col-Lep   548, 3341, 3374, 3381, 3390.
                 23.5  +15  306 +24   0.040   548  100   Peg       2572, 2589, 2593, 2657.
                 01.1    0  298  -3   0.043   588  100   Cet       76, 119, 147, 168.
                 01.4  +15  312  -2   0.044   601  150   Psc       160, 193, 195.
Shapley (b)      13.4  -30  147  -2   0.048   654  200   Cen-Hya   1631, 1644, 1709, 1736, 3528, 3530, 3532, 3542, 3553,
                                                                   3554, 3555, 3556, 3558, 3559, 3560, 3562, 3564, 3566,
                                                                   3572, 3577.
Sculptor         23.7  -36  257  +5   0.049   668  100   Scl       2717, 4008, 4012, 4013, 4059.
                 10.3   -5  110 -40   0.050   681  200   Sex       912, 930, 957, 970, 978, 979, 993.
                 06.3  -53  215 -53   0.051   694  100   Pup-Car   3380, 3391, 3395.
                 11.5   -4  115 -22   0.052   708  100   Leo-Vir   1216, 1308, 1334.
                 15.2   +6  120 +34   0.052   708  150   Vir-Ser   2020, 2023, 2040, 2055.
                 21.9   -7  273 +40   0.055   747  100   Aqr       2366, 2399, 2415.
                 02.3   -8  294 -22   0.057   774  150   Cet       303, 326, 358.
Ursa Major       11.8  +56   59  +4   0.058   787  200   UMa       1270, 1291, 1318, 1324, 1377, 1383, 1436, 1452, 1507.
                 17.6  +78   31 +27   0.058   787  150   Dra-UMi   2248, 2256, 2271, 2296, 2309.
                 20.2  -56  218 +16   0.058   787  100   Tel       3651, 3667, 3685.
                 21.8  -18  260 +36   0.058   787  100   Cap       2361, 2362, 2372, 2382, 2383, 2401.
Pisces-Cetus (a) 00.6  -21  275  -1   0.060   813  350   Scl-Cet   14, 27, 74, 85, 86, 87, 114, 117, 121, 126, 133, 151,
                                                                   2660, 2683, 2716, 2734, 2794, 2800, 2824, 4049, 4053.
                 16.2  +52   59 +42   0.060   813  150   Dra-Her   2149, 2168, 2169, 2184.
Bootes           13.9  +24   96 +20   0.061   826  150   Boo       1781, 1795, 1825, 1827, 1828, 1831.
                 01.1  -49  248 -13   0.063   852  100   Phe       2841, 2854, 2889.
Pisces-Cetus (b) 01.5  +17  315  -4   0.063   852  200   Psc-Ari   150, 152, 154, 158, 171, 179, 225, 257, 292, 311.
                 03.2  -24  278 -37   0.065   879  150   Eri-For   419, 428, 3094, 3095.
                 00.9    0  296   0   0.066   892  100   Cet       102, 116, 134.
Horologium       03.5  -48  247 -37   0.067   905  550   Hor-Eri   3004, 3009, 3074, 3078, 3089, 3093, 3098, 3100, 3104,
                                                                   3106, 3107, 3108, 3109, 3110, 3111, 3112, 3116, 3120,
                                                                   3122, 3123, 3125, 3126, 3128, 3133, 3135, 3140, 3145,
                                                                   3158, 3164, 3195, 3202, 3223, 3225, 3266, 3301, 3312.
                 04.7  -21  282 -59   0.067   905  200   Eri-Lep   500, 514, 524, 3260.
                 23.6  +20  312 +23   0.068   918  100   Peg       2618, 2630, 2637.
                 01.0  -66  231 -15   0.069   931  150   Tuc       2819, 2859, 2864.
                 11.2   +4  105 -24   0.072   970  150   Leo       1149, 1171, 1205, 1238.
Corona Borealis  15.4  +30   90 +40   0.072   970  250   CBo       2005, 2019, 2056, 2061, 2065, 2067, 2079, 2089, 2092,
                                                                   2122, 2124.
                 22.7  -17  269 +25   0.072   970  100   Aqr       2456, 2459, 2462, 2480, 2492.
                 10.6   +4  101 -32   0.073   983  100   Sex       1024, 1032, 1066.
                 11.2  +41   70  -8   0.074   996   50   UMa       1173, 1187, 1190, 1203.
                 12.0  +32   82  -3   0.074   996  100   UMa-Com   1365, 1423, 1480.
                 14.0  +27   93 +21   0.074   996  150   Boo       1775, 1800, 1873, 1898.
                 21.9  -55  230 +10   0.075  1008  200   Ind       3771, 3785, 3796, 3806, 3822, 3825, 3826, 3886.

Column 1: Usual name for the supercluster if it has one.
Column 2: Right Ascension of the supercluster for epoch 2000.
Column 3: Declination of the supercluster for epoch 2000.
Column 4: Supergalactic longitude.
Column 5: Supergalactic latitude.
Column 6: The supercluster's redshift.
Column 7: Distance to the supercluster in millions of light years, assuming that
          the Hubble constant is 70 km/s/Mpc.
Column 8: Size of the supercluster in millions of light years.  This is a rough
          figure based on the distribution of the Abell clusters in the supercluster.
Column 9: Constellation(s) in which the majority of the supercluster lies.
Column 10: All known Abell clusters that make up the supercluster.

References:
Struble M, Rood H, (1999), A compilation of redshifts and velocity
                dispersions for ACO clusters, Astrophys J, 125, 35.
Abell G, Corwin H, Olowin R, (1989), A catalogue of Rich Clusters of
                Galaxies, Astrophys J Supp, 70, 1.
West M, (1989), On the morphology of superclusters, Astrophys J, 347, 610.
Zucca et al, (1993), All-sky catalogs of superclusters of Abell-ACO
                clusters, Astrophys J, 407, 470.
Fairall A, (1998), Large-scale structures in the Universe, Wiley.
Superclusters of Abell clusters

This is a map of all of the Abell galaxy clusters listed in the above table plotted onto the supergalactic plane. It shows many of the major superclusters within a billion light years. Yellow superclusters lie close to the supergalactic plane, while blue superclusters lie below it, and red ones lie above it. Note the highly concentrated Shapley Supercluster, and the very extensive Horologium Supercluster. The obscured region down the centre of the map is where the plane of our galaxy prevents us from seeing out into the universe.

The nearest superclusters Back to the Neighbouring Superclusters page