| HorologiumSupercluster | |
|---|---|
 A map of the Horologium Supercluster | |
| Observation data (Epoch ) | |
| Constellation(s) | Horologium andEridanus |
| Right ascension | 03h 19m |
| Declination | −50° 02′ |
| Major axis | 169 Mpc (551 Mly) |
| Distance | 291.4 Mpc (950 Mly) |
| Binding mass | ~1017 M☉ |
| Other designations | |
| Horologium-Reticulum Supercluster | |
TheHorologium-Reticulum Supercluster, is a massivesupercluster spanning around 550 million light-years.[1] It has a mass of around 1017solar masses, similar to that of theLaniakea Supercluster, which houses theMilky Way. It is centered on coordinatesright ascension03h 19m anddeclination −50° 02′, and spans an angular area of 12° × 12°.[2]
The nearest part of the supercluster is 700 millionlight-years away from Earth, while the far end of it is 1.2 billion light-years. It is visible in theconstellationsHorologium andEridanus. The Horologium Supercluster has about 5,000galaxy groups (30,000 giant galaxies and 300,000dwarf galaxies).[3] It includes the galaxy clusterAbell 3266.
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