Black hole
Gaia BH3
Also Gaia DR3 4318465066420528000
The most massive known stellar black hole in our galaxy, found in Gaia data in 2024.
Measured
- Distance
- 1,930 light-years
- Constellation
- Aquila
- Position (J2000)
- RA 19h 39m 19s, Dec +14.93°
How far, from the Sun
About 1,930 light-years. To cross it:
- Light1,930 years
- Voyager 1's speed34.3 million years
- Driving at 100 km/h20.8 billion years
Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.
Facts
- It has about 33 times the Sun's mass, the most for a stellar black hole in the Milky Way, as of 2024.
- Its companion, an old star poor in heavy elements, orbits it every 11.6 years.
How it was found
- It was found in pre-release Gaia DR4 data and announced in April 2024.
Where this comes from
- Gaia Collaboration 2024, A&A 686, L2 (parallax 1.6808 ± 0.0086 mas, about 590 pc)
Every catalogue Ouranos draws is credited on the credits page.