Limits RegistryPUBLIC RECORD
Limits RegistryJ0313-1806, reported in January 2021 using telescopes including Gemini, Magellan and ALMA, has a redshift of 7.64 — its light left when the universe was about 670 million years old. It hosts a black hole of roughly 1.6 billion solar masses, posing a challenge for black-hole growth models. JWST has since found fainter accreting black holes at higher redshift, but J0313-1806 remains the most distant classic luminous quasar on record.
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J0313-1806, reported in January 2021 using telescopes including Gemini, Magellan and ALMA, has a redshift of 7.64 — its light left when the universe was about 670 million years old. It hosts a black hole of roughly 1.6 billion solar masses, posing a challenge for black-hole growth models. JWST has since found fainter accreting black holes at higher redshift, but J0313-1806 remains the most distant classic luminous quasar on record.
The highest spectroscopically confirmed redshift of any known luminous quasar.
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Permanent ID limitsregistry.com/limits/LR-MOST-DISTANT-QUASAR
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Limits Registry. LR-MOST-DISTANT-QUASAR. Most distant known luminous quasar. 2026.