Limits RegistryPUBLIC RECORD
Limits RegistryGaia BH1, discovered in 2022 using precise astrometric wobble data from the Gaia spacecraft, is a roughly 10-solar-mass black hole in a binary system about 1,560 light-years away in the constellation Ophiuchus — the closest confirmed black hole to Earth. Unlike most known stellar-mass black holes, it was found through its gravitational tug on a Sun-like companion star rather than through X-ray emission.
The question, scope, and sources behind this Registry record.
Gaia BH1, discovered in 2022 using precise astrometric wobble data from the Gaia spacecraft, is a roughly 10-solar-mass black hole in a binary system about 1,560 light-years away in the constellation Ophiuchus — the closest confirmed black hole to Earth. Unlike most known stellar-mass black holes, it was found through its gravitational tug on a Sun-like companion star rather than through X-ray emission.
The shortest confirmed distance between Earth and any known stellar-mass black hole.
Change a parameter to stress-test whether a proposed result is still inside the published specification. This is an audit aid, not a proof checker.
This record has no editable parameters. Read the formal question and assumptions before challenging it.
Current frontiers derived from accepted Claims.
An observed or demonstrated result; no opposing bound is implied.
The frontier is not sacred
Most progress starts with a disagreement that survives contact with evidence. If you can push the known lower bound up or pull the upper bound down, show us the work.
≥ when you have shown that at least this value is achievable.≤ when you have shown that anything above this value is impossible.No vibes. State the value, define the scope, and link the paper, proof, code, or reproduction that lets another person check it. Editors review every challenge before the public record changes.
Challenge this recordAssertions tied to evidence, attribution, and review.
The frontier as it changed over time.
Only accepted Claims matching the current specification contribute to the displayed bounds. Strict inequalities remain open; contradictory Claims require editorial review.
1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-CLOSEST-BLACK-HOLE-EARTH
No active verified bounties are linked to this Limit.
View verified bounty tracker ↗No accepted machine-checked reproductions are recorded for this Limit.
Limits Registry. LR-CLOSEST-BLACK-HOLE-EARTH. Closest known black hole to Earth. 2026.