LMC X-1

Stellar-mass black hole

A stellar-mass black hole in the Large Magellanic Cloud, feeding on a hot, massive companion star in another galaxy entirely.

LMC X-1, a stellar-mass black holeComputed render
Computed render: general-relativistic ray-trace; colours mapped to a visible range. Not a photograph.
10.9 ☉
mass (the Sun = 1)
32 km
event-horizon radius (computed)
163,000 ly
from Earth

Mass is a best estimate from the cited observations, which carry their own measurement uncertainty.

Its event horizon, the edge past which nothing returns, spans about 32 km in radius.

It lives in
Large Magellanic Cloud
Irregular galaxy, 163,000 ly away.
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Black holes of similar mass
GW190917_114630Gravitational-wave source11.6 ☉GW241109_115924Gravitational-wave source11.9 ☉GRS 1915+105Stellar-mass12.4 ☉GW240413_022019Gravitational-wave source12.9 ☉V404 CygniStellar-mass9.0 ☉GW190924_021846Gravitational-wave source13.3 ☉
Worlds in the same direction on the sky→
Source: Curated from public catalogs via Wikidata (CC0). See data & analysis for full sourcing.
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