Sagittarius A*
Supermassive black hole
The Milky Way's central black hole, 4.3 million times the Sun's mass. In 2022 the Event Horizon Telescope captured its shadow, only the second black hole ever imaged.
4.3 million ☉
mass (the Sun = 1)
12.7M km
event-horizon radius (computed)
26,000 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 12.7M km in radius.
It anchors
Milky Way
Barred spiral galaxy.
Black holes of similar mass
Messier 106 Central Black HoleSupermassive39.0 million ☉Centaurus A Central Black HoleSupermassive55.0 million ☉Bode's Galaxy Central Black HoleSupermassive70.0 million ☉M31*Supermassive140.0 million ☉Sombrero Central Black HoleSupermassive1.0 billion ☉M87*Supermassive6.5 billion ☉
Worlds in the same direction on the sky→