Key facts
- Category
- Black holes
- Object class
- Ultramassive black hole
- Host
- Holm 15A, Abell 85
- Scale fact
- 236 billion kmevent horizon diameter
- Mass
- ~40 billion solar masses
Holm 15A*
236 billion kmevent horizon diameter
Visual creditscaleofspace.org / CC BY-NC 4.0
Details
Holm 15A* is the ultramassive black hole in the central galaxy of the Abell 85 galaxy cluster, measured at about 40 billion solar masses. That makes its event horizon enormous, while Holm 15A’s unusually diffuse center preserves evidence of the mergers that helped build it.
Models of stellar motions measured with VLT/MUSE indicate a central black hole of about 40 billion solar masses in Holm 15A, the brightest galaxy in the Abell 85 cluster. The estimate comes from resolved stellar dynamics rather than a galaxy scaling relation alone. Holm 15A also has an unusually large, diffuse stellar core, commonly interpreted as a product of past mergers.
Links
- Editorial guides
- Universe journey
- Cosmic web
- Preset views
- Wikipedia
- Holm 15A* on Wikipedia
Size neighbors
Objects near Holm 15A* on the scale
Sources
References for Holm 15A*
Measurements and descriptive context are compiled by the Scale of Space team from the references below. If you find an error, please let us know.
- Holm 15A* — Wikipedia
- Visual: scaleofspace.org / CC BY-NC 4.0
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