ACO catalog number | Other names | Member of | Constellation | Right ascension (J2000) | Declination (J2000) | Abell richness class | Bautz–Morgan type | Notes |
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2029 | | | Virgo | 15h 10m 56.0s | +05° 44′ 41″ | 2 | I | Near the Serpens–Virgo border. |
2052 | | | | 15h 16m 45.5s | +07° 00′ 01″ | 0 | I-II | |
2061 | | Corona Borealis Supercluster | Corona Borealis | 15h 21m 15.3s | +30° 39′ 17″ | 1 | III | |
2063 | | Hercules Superclusters | | 15h 23m 05.3s | +08° 36′ 33″ | | | |
2065 | Corona Borealis Cluster | Corona Borealis Supercluster | Corona Borealis | 15h 22m 42.6s | +27° 43′ 21″ | 2 | III | |
2067 | | Corona Borealis Supercluster | Corona Borealis | 15h 23m 14s | +30° 54′ 23″ | 1 | III | |
2079 | | Corona Borealis Supercluster | Corona Borealis | 15h 28m 04.7s | +28° 52′ 40″ | | | |
2089 | | Corona Borealis Supercluster | Corona Borealis | 15h 32m 41.3s | +28° 00′ 56″ | | | |
2092 | | Corona Borealis Supercluster | Corona Borealis | 15h 33m 17.0s | +31° 08′ 55″ | | | |
2107 | | Hercules Superclusters | | 15h 39m 39.0s | +21° 46′ 58″ | | | |
2124 | | | Corona Borealis | 15h 44m 59s | +36° 04′ | 1 | I | |
2142 | | | Corona Borealis | 15h 58m 16.1s | +27° 13′ 29″ | 2 | II | A merger of two huge galaxy clusters. |
2147 | | Hercules Superclusters | Serpens | 16h 02m 17.2s | +15° 53′ 43″ | 1 | III | |
2151 | Hercules Cluster | Hercules Superclusters | Hercules | 16h 05m 15.0s | +17° 44′ 55″ | 2 | III | Major component of the Hercules Superclusters. |
2152 | | Hercules Superclusters | | 16h 05m 22.4s | +16° 26′ 55″ | 1 | III | The smaller part of the Hercules supercluster, Lx ≤ 3 x 1044 ergs/s. [5] |
2162 | | Hercules Superclusters | Corona Borealis | 16h 12m 30.0s | +29° 32′ 23″ | | | |
2163 | | | Ophiuchus | 16h 15m 34.1s | −06° 07′ 26″ | 2 | | |
2199 | | Hercules Superclusters | Hercules | 16h 28m 38.5s | +39° 33′ 06″ | 2 | I | |
2200 | | | Hercules | 16h 29m 24.7s | +28° 10′ 30″ | 0 | | |
2218 | | | Draco | 16h 35m 54.0s | +66° 13′ 00″ | 4 | II | Exhibits gravitational lensing. |
2256 | | | Ursa Minor | 17h 03m 43.5s | +78° 43′ 03″ | 2 | II-III | |
2261 | | | Hercules | 17h 22m 28.34s | +32° 09′ 12.67″ | | I | Part of the Cluster Lensing and Supernova survey with Hubble (CLASH) survey. |
2319 | | | Cygnus | 19h 20m 45.3s | +43° 57′ 43″ | 1 | II-III | Very close to, and possibly extending into, Lyra. |
2384 | | | Capricornus | 21h 52m 18.9s | −19° 34′ 42″ | 1 | II-III | |
2390 | | | Pegasus | 21h 53m 34.6s | +17° 40′ 11″ | 1 | | |
2440 | | | | 22h 23m 52.6s | −01° 35′ 47″ | 0 | II | |
2515 | | | Pegasus | 23h 00m 40.9s | +31° 09' 52" | 3 | II | |
2589 | | | Pegasus | 23h 24m 00.5s | +16° 49′ 29″ | 0 | I | |
2666 | | | | 23h 50m 56.2s | +27° 08′ 41″ | 0 | I | |
2667 | | | Sculptor | 23h 51m 47.1s | −26° 00′ 18″ | 3 | I | Exhibits strong gravitational lensing. |
2744 | Pandora's Cluster | | Sculptor | 00h 14m 19.5s | −30° 23′ 19″ | 3 | III | It seems to have formed from four different clusters involved in a series of collisions over a period of some 350 million years. [6] |
3128 | Shapley 20 Cluster | Horologium Supercluster | | 03h 30m 34.6s | −52° 33′ 12″ | 3 | I-II | |
3158 | Shapley 17 Cluster | Horologium Supercluster | | 03h 42m 39.6s | −53° 37′ 50″ | 2 | I-II | |
3192 | MCS/MACS J0358.8-2955 | | Eridanus | | | | | Comprises such a huge amount of mass that the galaxy cluster noticeably curves spacetime around it, making it into a gravitational lens. Smaller galaxies behind the cluster appear distorted into long, warped arcs around the cluster’s edges. [7] |
3266 | | Horologium Supercluster | Reticulum | 04h 31m 11.9s | −61° 24′ 23″ | 2 | I-II | |
3341 | | | | 05h 25m 35.1s | −31° 35′ 26″ | 2 | II | |
3363 | | | | 05h 45m 07.8s | −47° 56′ 52″ | 3 | I | |
3526 | Centaurus Cluster | Hydra–Centaurus Supercluster | Centaurus | 12h 48m 51.8s | −41° 18′ 21″ | 0 | I-II | |
3558 | Shapley 8 Cluster | Shapley Supercluster | | 13h 27m 54.8s | −31° 29′ 32″ | 4 | I | |
3562 | | Shapley Supercluster | | 13h 33m 31.8s | −31° 40′ 23″ | 2 | I | |
3565 | | Hydra–Centaurus Supercluster | | 13h 36m 39.9s | −33° 58′ 17″ | 1 | I | |
3574 | | Hydra–Centaurus Supercluster | | 13h 49m 09.4s | −30° 17′ 54″ | 0 | I | |
3581 | | Hydra–Centaurus Supercluster | | 14h 07m 27.5s | −27° 01′ 15″ | 0 | I | |
3627 | Norma Cluster | | Norma | 16h 15m 32.8s | −60° 54′ 30″ | 1 | I | |
3667 | | | Pavo | 20h 12m 31s | −56° 49′ 55″ | 2 | I-II | 10^15 solar masses, bright X-ray source, paired radio relics, likely result of cluster merger |
3677 | | | Microscopium | 20h 26m 21s | −33° 21′ 06″ | | | possible member of Microscopium Supercluster |
3693 | | | Microscopium | 20h 34m 22s | −34° 29′ 40″ | | | possible member of Microscopium Supercluster |
3695 | | Microscopium Supercluster | Microscopium | 20h 34m 48s | −35° 49′ 39″ | | | gravitationally bound to Abell 3696 |
3696 | | Microscopium Supercluster | Microscopium | 20h 35m 10s | −34° 54′ 36″ | | | gravitationally bound to Abell 3695 |
3705 | | | Microscopium | 20h 41m 42s | −35° 14′ 00″ | | | possible member of Microscopium Supercluster |
3854 | | | | 22h 17m 42.9s | −35° 42′ 58″ | 3 | II | |
4059 | | | | 23h 56m 40.7s | −34° 40′ 18″ | 1 | I | |
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