Feature Primary Black Hole Secondary Black Hole
----------------------- ------------------------------ ------------------------------
Mass 1.8 × 10^10 M 1.5 × 10^8 M
Schwarzschild Radius 356 AU 3.0 AU
--- Circular / Average Orbital Properties ---
Orbital Period 12 years
Semi-Major Axis 13,800 AU (~0.22 ly)
Orbital Speed (avg) 282 km/s (0.094% c) 33,900 km/s (11.3% c)
--- Elliptical Orbit (e ≈ 0.65) ---
Pericenter Distance 4,830 AU (same)
Orbital Speed (peri) 613 km/s (0.20% c) 73,600 km/s (24.5% c)
Apocenter Distance 22,800 AU (same)
Orbital Speed (apo) 130 km/s (0.043% c) 15,600 km/s (5.2% c)
So the "smaller" SMBH is punching through the larger one's disk at a significant fraction of c twice every 12 years. But it's losing energy to gravitational waves so quickly that they'll probably merge in around 10,000 years [1]
Such a system would make easy[1] for any civilization living nearby to launch spaceships at a large fraction of the speed of light. But the tricky part would be braking at the destination, unless your destination is a similar and suitably aligned system.
> the "smaller" SMBH is punching through the larger one's disk at a significant fraction of c twice every 12 years. But it's losing energy to gravitational waves so quickly
Bro should get in shape before they start to clap cheeks
[1] https://archive.is/Ccy5M