Limits RegistryPUBLIC RECORD
Limits RegistryKepler-90, a Sun-like star about 2,545 light-years away, has 8 confirmed planets — tying the count of planets in our own solar system. The eighth, Kepler-90i, was identified in December 2017 using a Google-developed neural network trained to spot faint transit signals in Kepler telescope data that earlier automated searches had missed. As of 2026 this remains the confirmed record, though ongoing surveys continue to find systems with many transiting planet candidates that may eventually be confirmed in greater numbers.
The question, scope, and sources behind this Registry record.
Kepler-90, a Sun-like star about 2,545 light-years away, has 8 confirmed planets — tying the count of planets in our own solar system. The eighth, Kepler-90i, was identified in December 2017 using a Google-developed neural network trained to spot faint transit signals in Kepler telescope data that earlier automated searches had missed. As of 2026 this remains the confirmed record, though ongoing surveys continue to find systems with many transiting planet candidates that may eventually be confirmed in greater numbers.
The greatest number of confirmed planets known to orbit a single star other than the Sun, as of the most recent discovery.
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.
No community challenges are recorded for this published version yet.
1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-MOST-PLANETS-SINGLE-SYSTEM
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-MOST-PLANETS-SINGLE-SYSTEM. Most planets confirmed in a single planetary system. 2026.